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* cygthread.cc (cygthread::initialized): Avoid copying on fork or some threads

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may not end up in the pool.
(cygthread::new): Avoid race when checking for initialized.  Add debugging
code.
* fhandler.cc (fhandler_base::raw_read): Add case for ERROR_INVALID_HANDLE due
to Win95 directories.
(fhandler_base::open): Handle errors due to Win95 directories.
(fhandler_base::close): Add get_nohandle () test.
(fhandler_base::set_close_on_exec): Ditto.
(fhandler_base::fork_fixup): Ditto.
(fhandler_base::lock): Change error code to Posix EINVAL.
(fhandler_base::dup): If get_nohandle (), set new value to INVALID_HANDLE_VALUE
instead of NULL.
* fhandler_disk_file.cc (fhandler_disk_file::fstat): Call fstat_by_name if
get_nohandle ().  Remove extraneous element from strpbrk.
(fhandler_disk_file::open): Remove test for Win95 directory.
* fhandler_random.cc (fhandler_dev_random::open): Add set_nohandle ().
* fhandler_clipboard.cc (fhandler_dev_clipboard::open): Ditto.
* fhandler_zero.cc (fhandler_dev_zero::open): Ditto.
(fhandler_dev_zero::close): Delete.
* fhandler.h (class fhandler_dev_zero): Ditto.
This commit is contained in:
Christopher Faylor
2002-09-19 03:30:20 +00:00
parent 57dfd574a7
commit 5bf785a017
20 changed files with 152 additions and 111 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
winsup/cygwin/cygthread.cc
View File

@@ -19,7 +19,7 @@ static cygthread NO_COPY threads[6];
#define NTHREADS (sizeof (threads) / sizeof (threads[0]))
DWORD NO_COPY cygthread::main_thread_id;
bool cygthread::initialized;
bool NO_COPY cygthread::initialized;
/* Initial stub called by cygthread constructor. Performs initial
per-thread initialization and loops waiting for new thread functions
@@ -127,8 +127,9 @@ new (size_t)
for (;;)
{
bool was_initialized = initialized;
/* Search the threads array for an empty slot to use */
for (info = threads; info < threads + NTHREADS; info++)
for (info = threads + NTHREADS - 1; info >= threads; info--)
if ((id = (DWORD) InterlockedExchange ((LPLONG) &info->avail, 0)))
{
info->id = id;
@@ -139,10 +140,17 @@ new (size_t)
return info;
}
if (!initialized)
Sleep (0); /* thread_runner is not be finished yet. */
if (!was_initialized)
Sleep (0); /* thread_runner is not finished yet. */
else
return freerange ();
{
#ifdef DEBUGGING
char buf[1024];
if (GetEnvironmentVariable ("CYGWIN_NOFREERANGE", buf, sizeof (buf)))
api_fatal ("Overflowed cygwin thread pool");
#endif
return freerange ();
}
}
}