699 lines
23 KiB
C++
699 lines
23 KiB
C++
// Copyright (c) 2010, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// exception_handler_test.cc: Unit tests for google_breakpad::ExceptionHandler
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#include <pthread.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "breakpad_googletest_includes.h"
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#include "client/mac/handler/exception_handler.h"
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#include "client/mac/tests/auto_tempdir.h"
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#include "common/mac/MachIPC.h"
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#include "google_breakpad/processor/minidump.h"
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namespace google_breakpad {
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// This acts as the log sink for INFO logging from the processor
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// logging code. The logging output confuses XCode and makes it think
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// there are unit test failures. testlogging.h handles the overriding.
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std::ostringstream info_log;
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}
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namespace {
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using std::string;
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using google_breakpad::AutoTempDir;
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using google_breakpad::ExceptionHandler;
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using google_breakpad::MachPortSender;
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using google_breakpad::MachReceiveMessage;
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using google_breakpad::MachSendMessage;
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using google_breakpad::Minidump;
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using google_breakpad::MinidumpContext;
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using google_breakpad::MinidumpException;
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using google_breakpad::MinidumpMemoryList;
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using google_breakpad::MinidumpMemoryRegion;
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using google_breakpad::ReceivePort;
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using testing::Test;
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class ExceptionHandlerTest : public Test {
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public:
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AutoTempDir tempDir;
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string lastDumpName;
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};
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static void Crasher() {
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int *a = (int*)0x42;
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fprintf(stdout, "Going to crash...\n");
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fprintf(stdout, "A = %d", *a);
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}
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static void SoonToCrash() {
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Crasher();
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}
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static bool MDCallback(const char *dump_dir, const char *file_name,
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void *context, bool success) {
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string path(dump_dir);
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path.append("/");
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path.append(file_name);
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path.append(".dmp");
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int fd = *reinterpret_cast<int*>(context);
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(void)write(fd, path.c_str(), path.length() + 1);
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close(fd);
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exit(0);
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// not reached
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return true;
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}
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TEST_F(ExceptionHandlerTest, InProcess) {
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// Give the child process a pipe to report back on.
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int fds[2];
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ASSERT_EQ(0, pipe(fds));
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// Fork off a child process so it can crash.
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pid_t pid = fork();
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if (pid == 0) {
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// In the child process.
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close(fds[0]);
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ExceptionHandler eh(tempDir.path, NULL, MDCallback, &fds[1], true, NULL);
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// crash
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SoonToCrash();
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// not reached
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exit(1);
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}
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// In the parent process.
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ASSERT_NE(-1, pid);
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// Wait for the background process to return the minidump file.
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close(fds[1]);
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char minidump_file[PATH_MAX];
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ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
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ASSERT_NE(0, nbytes);
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// Ensure that minidump file exists and is > 0 bytes.
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struct stat st;
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ASSERT_EQ(0, stat(minidump_file, &st));
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ASSERT_LT(0, st.st_size);
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// Child process should have exited with a zero status.
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int ret;
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ASSERT_EQ(pid, waitpid(pid, &ret, 0));
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EXPECT_NE(0, WIFEXITED(ret));
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EXPECT_EQ(0, WEXITSTATUS(ret));
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}
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static bool DumpNameMDCallback(const char *dump_dir, const char *file_name,
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void *context, bool success) {
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ExceptionHandlerTest *self = reinterpret_cast<ExceptionHandlerTest*>(context);
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if (dump_dir && file_name) {
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self->lastDumpName = dump_dir;
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self->lastDumpName += "/";
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self->lastDumpName += file_name;
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self->lastDumpName += ".dmp";
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}
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return true;
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}
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TEST_F(ExceptionHandlerTest, WriteMinidump) {
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ExceptionHandler eh(tempDir.path, NULL, DumpNameMDCallback, this, true, NULL);
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ASSERT_TRUE(eh.WriteMinidump());
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// Ensure that minidump file exists and is > 0 bytes.
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ASSERT_FALSE(lastDumpName.empty());
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struct stat st;
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ASSERT_EQ(0, stat(lastDumpName.c_str(), &st));
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ASSERT_LT(0, st.st_size);
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// The minidump should not contain an exception stream.
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Minidump minidump(lastDumpName);
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ASSERT_TRUE(minidump.Read());
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MinidumpException* exception = minidump.GetException();
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EXPECT_FALSE(exception);
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}
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TEST_F(ExceptionHandlerTest, WriteMinidumpWithException) {
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ExceptionHandler eh(tempDir.path, NULL, DumpNameMDCallback, this, true, NULL);
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ASSERT_TRUE(eh.WriteMinidump(true));
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// Ensure that minidump file exists and is > 0 bytes.
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ASSERT_FALSE(lastDumpName.empty());
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struct stat st;
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ASSERT_EQ(0, stat(lastDumpName.c_str(), &st));
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ASSERT_LT(0, st.st_size);
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// The minidump should contain an exception stream.
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Minidump minidump(lastDumpName);
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ASSERT_TRUE(minidump.Read());
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MinidumpException* exception = minidump.GetException();
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ASSERT_TRUE(exception);
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const MDRawExceptionStream* raw_exception = exception->exception();
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ASSERT_TRUE(raw_exception);
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EXPECT_EQ(MD_EXCEPTION_MAC_BREAKPOINT,
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raw_exception->exception_record.exception_code);
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}
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TEST_F(ExceptionHandlerTest, DumpChildProcess) {
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const int kTimeoutMs = 2000;
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// Create a mach port to receive the child task on.
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char machPortName[128];
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sprintf(machPortName, "ExceptionHandlerTest.%d", getpid());
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ReceivePort parent_recv_port(machPortName);
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// Give the child process a pipe to block on.
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int fds[2];
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ASSERT_EQ(0, pipe(fds));
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// Fork off a child process to dump.
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pid_t pid = fork();
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if (pid == 0) {
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// In the child process
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close(fds[1]);
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// Send parent process the task and thread ports.
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MachSendMessage child_message(0);
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child_message.AddDescriptor(mach_task_self());
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child_message.AddDescriptor(mach_thread_self());
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MachPortSender child_sender(machPortName);
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if (child_sender.SendMessage(child_message, kTimeoutMs) != KERN_SUCCESS)
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exit(1);
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// Wait for the parent process.
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uint8_t data;
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read(fds[0], &data, 1);
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exit(0);
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}
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// In the parent process.
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ASSERT_NE(-1, pid);
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close(fds[0]);
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// Read the child's task and thread ports.
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MachReceiveMessage child_message;
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ASSERT_EQ(KERN_SUCCESS,
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parent_recv_port.WaitForMessage(&child_message, kTimeoutMs));
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mach_port_t child_task = child_message.GetTranslatedPort(0);
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mach_port_t child_thread = child_message.GetTranslatedPort(1);
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ASSERT_NE((mach_port_t)MACH_PORT_NULL, child_task);
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ASSERT_NE((mach_port_t)MACH_PORT_NULL, child_thread);
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// Write a minidump of the child process.
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bool result = ExceptionHandler::WriteMinidumpForChild(child_task,
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child_thread,
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tempDir.path,
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DumpNameMDCallback,
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this);
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ASSERT_EQ(true, result);
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// Ensure that minidump file exists and is > 0 bytes.
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ASSERT_FALSE(lastDumpName.empty());
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struct stat st;
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ASSERT_EQ(0, stat(lastDumpName.c_str(), &st));
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ASSERT_LT(0, st.st_size);
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// Unblock child process
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uint8_t data = 1;
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(void)write(fds[1], &data, 1);
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// Child process should have exited with a zero status.
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int ret;
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ASSERT_EQ(pid, waitpid(pid, &ret, 0));
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EXPECT_NE(0, WIFEXITED(ret));
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EXPECT_EQ(0, WEXITSTATUS(ret));
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}
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// Test that memory around the instruction pointer is written
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// to the dump as a MinidumpMemoryRegion.
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TEST_F(ExceptionHandlerTest, InstructionPointerMemory) {
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// Give the child process a pipe to report back on.
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int fds[2];
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ASSERT_EQ(0, pipe(fds));
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// These are defined here so the parent can use them to check the
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// data from the minidump afterwards.
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const u_int32_t kMemorySize = 256; // bytes
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const int kOffset = kMemorySize / 2;
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// This crashes with SIGILL on x86/x86-64/arm.
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const unsigned char instructions[] = { 0xff, 0xff, 0xff, 0xff };
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pid_t pid = fork();
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if (pid == 0) {
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close(fds[0]);
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ExceptionHandler eh(tempDir.path, NULL, MDCallback, &fds[1], true, NULL);
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// Get some executable memory.
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char* memory =
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reinterpret_cast<char*>(mmap(NULL,
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kMemorySize,
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PROT_READ | PROT_WRITE | PROT_EXEC,
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MAP_PRIVATE | MAP_ANON,
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-1,
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0));
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if (!memory)
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exit(0);
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// Write some instructions that will crash. Put them in the middle
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// of the block of memory, because the minidump should contain 128
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// bytes on either side of the instruction pointer.
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memcpy(memory + kOffset, instructions, sizeof(instructions));
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// Now execute the instructions, which should crash.
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typedef void (*void_function)(void);
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void_function memory_function =
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reinterpret_cast<void_function>(memory + kOffset);
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memory_function();
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// not reached
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exit(1);
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}
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// In the parent process.
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ASSERT_NE(-1, pid);
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close(fds[1]);
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// Wait for the background process to return the minidump file.
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close(fds[1]);
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char minidump_file[PATH_MAX];
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ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
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ASSERT_NE(0, nbytes);
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// Ensure that minidump file exists and is > 0 bytes.
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struct stat st;
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ASSERT_EQ(0, stat(minidump_file, &st));
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ASSERT_LT(0, st.st_size);
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// Child process should have exited with a zero status.
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int ret;
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ASSERT_EQ(pid, waitpid(pid, &ret, 0));
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EXPECT_NE(0, WIFEXITED(ret));
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EXPECT_EQ(0, WEXITSTATUS(ret));
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// Read the minidump. Locate the exception record and the
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// memory list, and then ensure that there is a memory region
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// in the memory list that covers the instruction pointer from
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// the exception record.
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Minidump minidump(minidump_file);
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ASSERT_TRUE(minidump.Read());
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MinidumpException* exception = minidump.GetException();
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MinidumpMemoryList* memory_list = minidump.GetMemoryList();
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ASSERT_TRUE(exception);
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ASSERT_TRUE(memory_list);
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ASSERT_NE((unsigned int)0, memory_list->region_count());
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MinidumpContext* context = exception->GetContext();
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ASSERT_TRUE(context);
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u_int64_t instruction_pointer;
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switch (context->GetContextCPU()) {
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case MD_CONTEXT_X86:
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instruction_pointer = context->GetContextX86()->eip;
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break;
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case MD_CONTEXT_AMD64:
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instruction_pointer = context->GetContextAMD64()->rip;
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break;
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case MD_CONTEXT_ARM:
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instruction_pointer = context->GetContextARM()->iregs[15];
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break;
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default:
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FAIL() << "Unknown context CPU: " << context->GetContextCPU();
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break;
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}
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MinidumpMemoryRegion* region =
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memory_list->GetMemoryRegionForAddress(instruction_pointer);
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EXPECT_TRUE(region);
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EXPECT_EQ(kMemorySize, region->GetSize());
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const u_int8_t* bytes = region->GetMemory();
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ASSERT_TRUE(bytes);
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u_int8_t prefix_bytes[kOffset];
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u_int8_t suffix_bytes[kMemorySize - kOffset - sizeof(instructions)];
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memset(prefix_bytes, 0, sizeof(prefix_bytes));
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memset(suffix_bytes, 0, sizeof(suffix_bytes));
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EXPECT_TRUE(memcmp(bytes, prefix_bytes, sizeof(prefix_bytes)) == 0);
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EXPECT_TRUE(memcmp(bytes + kOffset, instructions, sizeof(instructions)) == 0);
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EXPECT_TRUE(memcmp(bytes + kOffset + sizeof(instructions),
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suffix_bytes, sizeof(suffix_bytes)) == 0);
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}
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// Test that the memory region around the instruction pointer is
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// bounded correctly on the low end.
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TEST_F(ExceptionHandlerTest, InstructionPointerMemoryMinBound) {
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// Give the child process a pipe to report back on.
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int fds[2];
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ASSERT_EQ(0, pipe(fds));
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// These are defined here so the parent can use them to check the
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// data from the minidump afterwards.
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const u_int32_t kMemorySize = 256; // bytes
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const int kOffset = 0;
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// This crashes with SIGILL on x86/x86-64/arm.
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const unsigned char instructions[] = { 0xff, 0xff, 0xff, 0xff };
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pid_t pid = fork();
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if (pid == 0) {
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close(fds[0]);
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ExceptionHandler eh(tempDir.path, NULL, MDCallback, &fds[1], true, NULL);
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// Get some executable memory.
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char* memory =
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reinterpret_cast<char*>(mmap(NULL,
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kMemorySize,
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PROT_READ | PROT_WRITE | PROT_EXEC,
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MAP_PRIVATE | MAP_ANON,
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-1,
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0));
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if (!memory)
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exit(0);
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// Write some instructions that will crash. Put them at the start
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// of the block of memory, to ensure that the memory bounding
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// works properly.
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memcpy(memory + kOffset, instructions, sizeof(instructions));
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// Now execute the instructions, which should crash.
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typedef void (*void_function)(void);
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void_function memory_function =
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reinterpret_cast<void_function>(memory + kOffset);
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memory_function();
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// not reached
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exit(1);
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}
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// In the parent process.
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ASSERT_NE(-1, pid);
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close(fds[1]);
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// Wait for the background process to return the minidump file.
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close(fds[1]);
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char minidump_file[PATH_MAX];
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ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
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ASSERT_NE(0, nbytes);
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// Ensure that minidump file exists and is > 0 bytes.
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struct stat st;
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ASSERT_EQ(0, stat(minidump_file, &st));
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ASSERT_LT(0, st.st_size);
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// Child process should have exited with a zero status.
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int ret;
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ASSERT_EQ(pid, waitpid(pid, &ret, 0));
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EXPECT_NE(0, WIFEXITED(ret));
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EXPECT_EQ(0, WEXITSTATUS(ret));
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// Read the minidump. Locate the exception record and the
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// memory list, and then ensure that there is a memory region
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// in the memory list that covers the instruction pointer from
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// the exception record.
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Minidump minidump(minidump_file);
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ASSERT_TRUE(minidump.Read());
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MinidumpException* exception = minidump.GetException();
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MinidumpMemoryList* memory_list = minidump.GetMemoryList();
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ASSERT_TRUE(exception);
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ASSERT_TRUE(memory_list);
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ASSERT_NE((unsigned int)0, memory_list->region_count());
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MinidumpContext* context = exception->GetContext();
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ASSERT_TRUE(context);
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u_int64_t instruction_pointer;
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switch (context->GetContextCPU()) {
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case MD_CONTEXT_X86:
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instruction_pointer = context->GetContextX86()->eip;
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break;
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case MD_CONTEXT_AMD64:
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instruction_pointer = context->GetContextAMD64()->rip;
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break;
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case MD_CONTEXT_ARM:
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instruction_pointer = context->GetContextARM()->iregs[15];
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break;
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default:
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FAIL() << "Unknown context CPU: " << context->GetContextCPU();
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break;
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}
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MinidumpMemoryRegion* region =
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memory_list->GetMemoryRegionForAddress(instruction_pointer);
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EXPECT_TRUE(region);
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EXPECT_EQ(kMemorySize / 2, region->GetSize());
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const u_int8_t* bytes = region->GetMemory();
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ASSERT_TRUE(bytes);
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u_int8_t suffix_bytes[kMemorySize / 2 - sizeof(instructions)];
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memset(suffix_bytes, 0, sizeof(suffix_bytes));
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EXPECT_TRUE(memcmp(bytes + kOffset, instructions, sizeof(instructions)) == 0);
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EXPECT_TRUE(memcmp(bytes + kOffset + sizeof(instructions),
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suffix_bytes, sizeof(suffix_bytes)) == 0);
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}
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// Test that the memory region around the instruction pointer is
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// bounded correctly on the high end.
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TEST_F(ExceptionHandlerTest, InstructionPointerMemoryMaxBound) {
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// Give the child process a pipe to report back on.
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int fds[2];
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ASSERT_EQ(0, pipe(fds));
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// These are defined here so the parent can use them to check the
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// data from the minidump afterwards.
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// Use 4k here because the OS will hand out a single page even
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// if a smaller size is requested, and this test wants to
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// test the upper bound of the memory range.
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const u_int32_t kMemorySize = 4096; // bytes
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// This crashes with SIGILL on x86/x86-64/arm.
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const unsigned char instructions[] = { 0xff, 0xff, 0xff, 0xff };
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const int kOffset = kMemorySize - sizeof(instructions);
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
close(fds[0]);
|
|
ExceptionHandler eh(tempDir.path, NULL, MDCallback, &fds[1], true, NULL);
|
|
// Get some executable memory.
|
|
char* memory =
|
|
reinterpret_cast<char*>(mmap(NULL,
|
|
kMemorySize,
|
|
PROT_READ | PROT_WRITE | PROT_EXEC,
|
|
MAP_PRIVATE | MAP_ANON,
|
|
-1,
|
|
0));
|
|
if (!memory)
|
|
exit(0);
|
|
|
|
// Write some instructions that will crash. Put them at the start
|
|
// of the block of memory, to ensure that the memory bounding
|
|
// works properly.
|
|
memcpy(memory + kOffset, instructions, sizeof(instructions));
|
|
|
|
// Now execute the instructions, which should crash.
|
|
typedef void (*void_function)(void);
|
|
void_function memory_function =
|
|
reinterpret_cast<void_function>(memory + kOffset);
|
|
memory_function();
|
|
// not reached
|
|
exit(1);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
close(fds[1]);
|
|
|
|
// Wait for the background process to return the minidump file.
|
|
close(fds[1]);
|
|
char minidump_file[PATH_MAX];
|
|
ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
|
|
ASSERT_NE(0, nbytes);
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(minidump_file, &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
|
|
// Read the minidump. Locate the exception record and the
|
|
// memory list, and then ensure that there is a memory region
|
|
// in the memory list that covers the instruction pointer from
|
|
// the exception record.
|
|
Minidump minidump(minidump_file);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpException* exception = minidump.GetException();
|
|
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
|
|
ASSERT_TRUE(exception);
|
|
ASSERT_TRUE(memory_list);
|
|
ASSERT_NE((unsigned int)0, memory_list->region_count());
|
|
|
|
MinidumpContext* context = exception->GetContext();
|
|
ASSERT_TRUE(context);
|
|
|
|
u_int64_t instruction_pointer;
|
|
switch (context->GetContextCPU()) {
|
|
case MD_CONTEXT_X86:
|
|
instruction_pointer = context->GetContextX86()->eip;
|
|
break;
|
|
case MD_CONTEXT_AMD64:
|
|
instruction_pointer = context->GetContextAMD64()->rip;
|
|
break;
|
|
case MD_CONTEXT_ARM:
|
|
instruction_pointer = context->GetContextARM()->iregs[15];
|
|
break;
|
|
default:
|
|
FAIL() << "Unknown context CPU: " << context->GetContextCPU();
|
|
break;
|
|
}
|
|
|
|
MinidumpMemoryRegion* region =
|
|
memory_list->GetMemoryRegionForAddress(instruction_pointer);
|
|
EXPECT_TRUE(region);
|
|
|
|
const size_t kPrefixSize = 128; // bytes
|
|
EXPECT_EQ(kPrefixSize + sizeof(instructions), region->GetSize());
|
|
const u_int8_t* bytes = region->GetMemory();
|
|
ASSERT_TRUE(bytes);
|
|
|
|
u_int8_t prefix_bytes[kPrefixSize];
|
|
memset(prefix_bytes, 0, sizeof(prefix_bytes));
|
|
EXPECT_TRUE(memcmp(bytes, prefix_bytes, sizeof(prefix_bytes)) == 0);
|
|
EXPECT_TRUE(memcmp(bytes + kPrefixSize,
|
|
instructions, sizeof(instructions)) == 0);
|
|
}
|
|
|
|
// Ensure that an extra memory block doesn't get added when the
|
|
// instruction pointer is not in mapped memory.
|
|
TEST_F(ExceptionHandlerTest, InstructionPointerMemoryNullPointer) {
|
|
// Give the child process a pipe to report back on.
|
|
int fds[2];
|
|
ASSERT_EQ(0, pipe(fds));
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
close(fds[0]);
|
|
ExceptionHandler eh(tempDir.path, NULL, MDCallback, &fds[1], true, NULL);
|
|
// Try calling a NULL pointer.
|
|
typedef void (*void_function)(void);
|
|
void_function memory_function =
|
|
reinterpret_cast<void_function>(NULL);
|
|
memory_function();
|
|
// not reached
|
|
exit(1);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
close(fds[1]);
|
|
|
|
// Wait for the background process to return the minidump file.
|
|
close(fds[1]);
|
|
char minidump_file[PATH_MAX];
|
|
ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
|
|
ASSERT_NE(0, nbytes);
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(minidump_file, &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
|
|
// Read the minidump. Locate the exception record and the
|
|
// memory list, and then ensure that there is only one memory region
|
|
// in the memory list (the thread memory from the single thread).
|
|
Minidump minidump(minidump_file);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpException* exception = minidump.GetException();
|
|
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
|
|
ASSERT_TRUE(exception);
|
|
ASSERT_TRUE(memory_list);
|
|
ASSERT_EQ((unsigned int)1, memory_list->region_count());
|
|
}
|
|
|
|
static void *Junk(void *) {
|
|
sleep(1000000);
|
|
return NULL;
|
|
}
|
|
|
|
// Test that the memory list gets written correctly when multiple
|
|
// threads are running.
|
|
TEST_F(ExceptionHandlerTest, MemoryListMultipleThreads) {
|
|
// Give the child process a pipe to report back on.
|
|
int fds[2];
|
|
ASSERT_EQ(0, pipe(fds));
|
|
|
|
pid_t pid = fork();
|
|
if (pid == 0) {
|
|
close(fds[0]);
|
|
ExceptionHandler eh(tempDir.path, NULL, MDCallback, &fds[1], true, NULL);
|
|
|
|
// Run an extra thread so >2 memory regions will be written.
|
|
pthread_t junk_thread;
|
|
if (pthread_create(&junk_thread, NULL, Junk, NULL) == 0)
|
|
pthread_detach(junk_thread);
|
|
|
|
// Just crash.
|
|
Crasher();
|
|
|
|
// not reached
|
|
exit(1);
|
|
}
|
|
// In the parent process.
|
|
ASSERT_NE(-1, pid);
|
|
close(fds[1]);
|
|
|
|
// Wait for the background process to return the minidump file.
|
|
close(fds[1]);
|
|
char minidump_file[PATH_MAX];
|
|
ssize_t nbytes = read(fds[0], minidump_file, sizeof(minidump_file));
|
|
ASSERT_NE(0, nbytes);
|
|
// Ensure that minidump file exists and is > 0 bytes.
|
|
struct stat st;
|
|
ASSERT_EQ(0, stat(minidump_file, &st));
|
|
ASSERT_LT(0, st.st_size);
|
|
|
|
// Child process should have exited with a zero status.
|
|
int ret;
|
|
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
|
|
EXPECT_NE(0, WIFEXITED(ret));
|
|
EXPECT_EQ(0, WEXITSTATUS(ret));
|
|
|
|
// Read the minidump, and verify that the memory list can be read.
|
|
Minidump minidump(minidump_file);
|
|
ASSERT_TRUE(minidump.Read());
|
|
|
|
MinidumpMemoryList* memory_list = minidump.GetMemoryList();
|
|
ASSERT_TRUE(memory_list);
|
|
// Verify that there are three memory regions:
|
|
// one per thread, and one for the instruction pointer memory.
|
|
ASSERT_EQ((unsigned int)3, memory_list->region_count());
|
|
}
|
|
|
|
}
|