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Issue #11223: Add threading._info() function providing informations about the

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thread implementation.

Skip test_lock_acquire_interruption() and test_rlock_acquire_interruption() of
test_threadsignals if a thread lock is implemented using a POSIX mutex and a
POSIX condition variable. A POSIX condition variable cannot be interrupted by a
signal (e.g. on Linux, the futex system call is restarted).
This commit is contained in:
Victor Stinner 2011-04-19 23:58:51 +02:00
parent cf2a807831
commit 754851f456
10 changed files with 150 additions and 18 deletions
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57
Python/thread.c
View file

@ -100,6 +100,7 @@ static size_t _pythread_stacksize = 0;
#endif
#ifdef SOLARIS_THREADS
#define PYTHREAD_NAME "solaris"
#include "thread_solaris.h"
#endif
@ -115,6 +116,7 @@ static size_t _pythread_stacksize = 0;
#endif
#ifdef _POSIX_THREADS
#define PYTHREAD_NAME "pthread"
#include "thread_pthread.h"
#endif
@ -124,14 +126,17 @@ static size_t _pythread_stacksize = 0;
#endif
#ifdef NT_THREADS
#define PYTHREAD_NAME "nt"
#include "thread_nt.h"
#endif
#ifdef OS2_THREADS
#define PYTHREAD_NAME "os2"
#include "thread_os2.h"
#endif
#ifdef PLAN9_THREADS
#define PYTHREAD_NAME "plan9"
#include "thread_plan9.h"
#endif
@ -409,3 +414,55 @@ PyThread_ReInitTLS(void)
}
#endif /* Py_HAVE_NATIVE_TLS */
PyObject*
_PyThread_Info(void)
{
PyObject *info, *value;
int ret;
char buffer[255];
int len;
info = PyDict_New();
if (info == NULL)
return NULL;
value = PyUnicode_FromString(PYTHREAD_NAME);
ret = PyDict_SetItemString(info, "name", value);
Py_DECREF(value);
if (ret)
goto error;
#ifdef _POSIX_THREADS
#ifdef USE_SEMAPHORES
value = PyUnicode_FromString("semaphore");
#else
value = PyUnicode_FromString("mutex+cond");
#endif
if (value == NULL)
return NULL;
ret = PyDict_SetItemString(info, "lock_implementation", value);
Py_DECREF(value);
if (ret)
goto error;
#if defined(HAVE_CONFSTR) && defined(_CS_GNU_LIBPTHREAD_VERSION)
len = confstr(_CS_GNU_LIBPTHREAD_VERSION, buffer, sizeof(buffer));
if (0 < len && len < sizeof(buffer)) {
value = PyUnicode_DecodeFSDefaultAndSize(buffer, len-1);
if (value == NULL)
goto error;
ret = PyDict_SetItemString(info, "pthread_version", value);
Py_DECREF(value);
if (ret)
goto error;
}
#endif
#endif
return info;
error:
Py_DECREF(info);
return NULL;
}