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* strace.cc (attach_process): Don't tell process to start stracing here.

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(proc_child): Do it here, instead, after first debug event.  This should work
around inexplicable races with DebugActiveProcess.
(dostrace): Pass any pid argument to proc_child.
This commit is contained in:
Christopher Faylor
2002-05-27 01:49:08 +00:00
parent 40a4eb7300
commit d73f9745f1
2 changed files with 16 additions and 3 deletions
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11
winsup/utils/strace.cc
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@@ -291,7 +291,6 @@ attach_process (pid_t pid)
if (!DebugActiveProcess (child_pid))
error (0, "couldn't attach to pid %d<%d> for debugging", pid, child_pid);
(void) cygwin_internal (CW_STRACE_TOGGLE, pid);
printf ("Attached to pid %d (windows pid %u)\n", pid, (unsigned) child_pid);
return;
}
@@ -572,7 +571,7 @@ handle_output_debug_string (DWORD id, LPVOID p, unsigned mask, FILE *ofile)
}
static void
proc_child (unsigned mask, FILE *ofile)
proc_child (unsigned mask, FILE *ofile, pid_t pid)
{
DEBUG_EVENT ev;
int processes = 0;
@@ -595,6 +594,12 @@ proc_child (unsigned mask, FILE *ofile)
if (!debug_event)
continue;
if (pid)
{
(void) cygwin_internal (CW_STRACE_TOGGLE, pid);
pid = 0;
}
switch (ev.dwDebugEventCode)
{
case CREATE_PROCESS_DEBUG_EVENT:
@@ -651,7 +656,7 @@ dostrace (unsigned mask, FILE *ofile, pid_t pid, char **argv)
create_child (argv);
else
attach_process (pid);
proc_child (mask, ofile);
proc_child (mask, ofile, pid);
return;
}