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#4852: Remove dead code in every thread implementation, unused for many years.

This commit is contained in:
Amaury Forgeot d'Arc 2010-02-23 23:19:39 +00:00
parent f20f9c299e
commit adfc80bd81
16 changed files with 29 additions and 576 deletions
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9
Include/pythread.h
View File

@ -2,9 +2,6 @@
#ifndef Py_PYTHREAD_H
#define Py_PYTHREAD_H
#define NO_EXIT_PROG /* don't define PyThread_exit_prog() */
/* (the result is no use of signals on SGI) */
typedef void *PyThread_type_lock;
typedef void *PyThread_type_sema;
@ -15,7 +12,6 @@ extern "C" {
PyAPI_FUNC(void) PyThread_init_thread(void);
PyAPI_FUNC(long) PyThread_start_new_thread(void (*)(void *), void *);
PyAPI_FUNC(void) PyThread_exit_thread(void);
PyAPI_FUNC(void) PyThread__PyThread_exit_thread(void);
PyAPI_FUNC(long) PyThread_get_thread_ident(void);
PyAPI_FUNC(PyThread_type_lock) PyThread_allocate_lock(void);
@ -28,11 +24,6 @@ PyAPI_FUNC(void) PyThread_release_lock(PyThread_type_lock);
PyAPI_FUNC(size_t) PyThread_get_stacksize(void);
PyAPI_FUNC(int) PyThread_set_stacksize(size_t);
#ifndef NO_EXIT_PROG
PyAPI_FUNC(void) PyThread_exit_prog(int);
PyAPI_FUNC(void) PyThread__PyThread_exit_prog(int);
#endif
/* Thread Local Storage (TLS) API */
PyAPI_FUNC(int) PyThread_create_key(void);
PyAPI_FUNC(void) PyThread_delete_key(int);

16
Modules/threadmodule.c
View File

@ -558,18 +558,6 @@ Raise a KeyboardInterrupt in the main thread.\n\
A subthread can use this function to interrupt the main thread."
);
#ifndef NO_EXIT_PROG
static PyObject *
thread_PyThread_exit_prog(PyObject *self, PyObject *args)
{
int sts;
if (!PyArg_ParseTuple(args, "i:exit_prog", &sts))
return NULL;
Py_Exit(sts); /* Calls PyThread_exit_prog(sts) or _PyThread_exit_prog(sts) */
for (;;) { } /* Should not be reached */
}
#endif
static lockobject *newlockobject(void);
static PyObject *
@ -703,10 +691,6 @@ static PyMethodDef thread_methods[] = {
{"stack_size", (PyCFunction)thread_stack_size,
METH_VARARGS,
stack_size_doc},
#ifndef NO_EXIT_PROG
{"exit_prog", (PyCFunction)thread_PyThread_exit_prog,
METH_VARARGS},
#endif
{NULL, NULL} /* sentinel */
};

1
PC/os2emx/python27.def
View File

@ -1160,7 +1160,6 @@ EXPORTS
"PyThread_delete_key"
"PyThread_set_key_value"
"PyThread_get_key_value"
"PyThread__exit_thread"
; From python27_s.lib(gcmodule)
; "initgc"

1
PC/os2vacpp/python.def
View File

@ -368,7 +368,6 @@ EXPORTS
PyThreadState_GetDict
PyThreadState_New
PyThreadState_Swap
PyThread__exit_thread
PyThread_acquire_lock
PyThread_allocate_lock
PyThread_allocate_sema

45
Python/thread_atheos.h
View File

@ -128,17 +128,14 @@ long PyThread_get_thread_ident(void)
}
static void do_PyThread_exit_thread(int no_cleanup)
void PyThread_exit_thread(void)
{
dprintf(("PyThread_exit_thread called\n"));
/* Thread-safe way to read a variable without a mutex: */
if (atomic_add(&thread_count, 0) == 0) {
/* No threads around, so exit main(). */
if (no_cleanup)
_exit(0);
else
exit(0);
exit(0);
} else {
/* We're a thread */
exit_thread(0);
@ -146,44 +143,6 @@ static void do_PyThread_exit_thread(int no_cleanup)
}
void PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
/* No need to do anything, the threads get torn down if main()exits. */
if (no_cleanup)
_exit(status);
else
exit(status);
}
void PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support.
*

43
Python/thread_beos.h
View File

@ -144,7 +144,7 @@ long PyThread_get_thread_ident( void )
return ( tid != B_NAME_NOT_FOUND ? tid : -1 );
}
static void do_PyThread_exit_thread( int no_cleanup )
void PyThread_exit_thread( void )
{
int32 threads;
@ -155,52 +155,13 @@ static void do_PyThread_exit_thread( int no_cleanup )
if( threads == 0 ) {
/* No threads around, so exit main(). */
if( no_cleanup ) {
_exit(0);
} else {
exit(0);
}
exit(0);
} else {
/* Oh, we're a thread, let's try to exit gracefully... */
exit_thread( B_NO_ERROR );
}
}
void PyThread_exit_thread( void )
{
do_PyThread_exit_thread(0);
}
void PyThread__exit_thread( void )
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void do_PyThread_exit_prog( int status, int no_cleanup )
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
/* No need to do anything, the threads get torn down if main() exits. */
if (no_cleanup) {
_exit(status);
} else {
exit(status);
}
}
void PyThread_exit_prog( int status )
{
do_PyThread_exit_prog(status, 0);
}
void PyThread__exit_prog( int status )
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/* ----------------------------------------------------------------------
* Lock support.
*/

50
Python/thread_cthread.h
View File

@ -50,59 +50,15 @@ PyThread_get_thread_ident(void)
return (long) cthread_self();
}
static void
do_PyThread_exit_thread(int no_cleanup)
{
dprintf(("PyThread_exit_thread called\n"));
if (!initialized)
if (no_cleanup)
_exit(0);
else
exit(0);
cthread_exit(0);
}
void
PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void
PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static
void do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
dprintf(("PyThread_exit_thread called\n"));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
if (no_cleanup)
_exit(status);
else
exit(status);
exit(0);
cthread_exit(0);
}
void
PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void
PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support.
*/

44
Python/thread_foobar.h
View File

@ -29,54 +29,14 @@ PyThread_get_thread_ident(void)
PyThread_init_thread();
}
static
void do_PyThread_exit_thread(int no_cleanup)
{
dprintf(("PyThread_exit_thread called\n"));
if (!initialized)
if (no_cleanup)
_exit(0);
else
exit(0);
}
void
PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void
PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static
void do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
dprintf(("PyThread_exit_thread called\n"));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
exit(0);
}
void
PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void
PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support.
*/

40
Python/thread_lwp.h
View File

@ -47,50 +47,14 @@ long PyThread_get_thread_ident(void)
return tid.thread_id;
}
static void do_PyThread_exit_thread(int no_cleanup)
void PyThread_exit_thread(void)
{
dprintf(("PyThread_exit_thread called\n"));
if (!initialized)
if (no_cleanup)
_exit(0);
else
exit(0);
exit(0);
lwp_destroy(SELF);
}
void PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
pod_exit(status);
}
void PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support.
*/

10
Python/thread_nt.h
View File

@ -203,16 +203,6 @@ PyThread_exit_thread(void)
#endif
}
#ifndef NO_EXIT_PROG
void
PyThread_exit_prog(int status)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
if (!initialized)
exit(status);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support. It has too be implemented as semaphores.
* I [Dag] tried to implement it with mutex but I could find a way to

46
Python/thread_os2.h
View File

@ -68,56 +68,16 @@ PyThread_get_thread_ident(void)
#endif
}
static void
do_PyThread_exit_thread(int no_cleanup)
void
PyThread_exit_thread(void)
{
dprintf(("%ld: PyThread_exit_thread called\n",
PyThread_get_thread_ident()));
if (!initialized)
if (no_cleanup)
_exit(0);
else
exit(0);
exit(0);
_endthread();
}
void
PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void
PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void
do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
}
void
PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void
PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support. This is implemented with an event semaphore and critical
* sections to make it behave more like a posix mutex than its OS/2

39
Python/thread_pth.h
View File

@ -74,49 +74,14 @@ long PyThread_get_thread_ident(void)
return (long) *(long *) &threadid;
}
static void do_PyThread_exit_thread(int no_cleanup)
void PyThread_exit_thread(void)
{
dprintf(("PyThread_exit_thread called\n"));
if (!initialized) {
if (no_cleanup)
_exit(0);
else
exit(0);
exit(0);
}
}
void PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
}
void PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support.
*/

48
Python/thread_pthread.h
View File

@ -225,55 +225,15 @@ PyThread_get_thread_ident(void)
#endif
}
static void
do_PyThread_exit_thread(int no_cleanup)
{
dprintf(("PyThread_exit_thread called\n"));
if (!initialized) {
if (no_cleanup)
_exit(0);
else
exit(0);
}
}
void
PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
dprintf(("PyThread_exit_thread called\n"));
if (!initialized) {
exit(0);
}
}
void
PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void
do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
}
void
PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void
PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
#ifdef USE_SEMAPHORES
/*

122
Python/thread_sgi.h
View File

@ -17,9 +17,6 @@ static ulock_t wait_lock; /* lock used to wait for other threads */
static int waiting_for_threads; /* protected by count_lock */
static int nthreads; /* protected by count_lock */
static int exit_status;
#ifndef NO_EXIT_PROG
static int do_exit; /* indicates that the program is to exit */
#endif
static int exiting; /* we're already exiting (for maybe_exit) */
static pid_t my_pid; /* PID of main thread */
static struct pidlist {
@ -27,53 +24,11 @@ static struct pidlist {
pid_t child;
} pidlist[MAXPROC]; /* PIDs of other threads; protected by count_lock */
static int maxpidindex; /* # of PIDs in pidlist */
#ifndef NO_EXIT_PROG
/*
* This routine is called as a signal handler when another thread
* exits. When that happens, we must see whether we have to exit as
* well (because of an PyThread_exit_prog()) or whether we should continue on.
*/
static void exit_sig(void)
{
d2printf(("exit_sig called\n"));
if (exiting && getpid() == my_pid) {
d2printf(("already exiting\n"));
return;
}
if (do_exit) {
d2printf(("exiting in exit_sig\n"));
#ifdef Py_DEBUG
if ((thread_debug & 8) == 0)
thread_debug &= ~1; /* don't produce debug messages */
#endif
PyThread_exit_thread();
}
}
/*
* This routine is called when a process calls exit(). If that wasn't
* done from the library, we do as if an PyThread_exit_prog() was intended.
*/
static void maybe_exit(void)
{
dprintf(("maybe_exit called\n"));
if (exiting) {
dprintf(("already exiting\n"));
return;
}
PyThread_exit_prog(0);
}
#endif /* NO_EXIT_PROG */
/*
* Initialization.
*/
static void PyThread__init_thread(void)
{
#ifndef NO_EXIT_PROG
struct sigaction s;
#endif /* NO_EXIT_PROG */
#ifdef USE_DL
long addr, size;
#endif /* USE_DL */
@ -93,16 +48,6 @@ static void PyThread__init_thread(void)
if (usconfig(CONF_INITUSERS, 16) < 0)
perror("usconfig - CONF_INITUSERS");
my_pid = getpid(); /* so that we know which is the main thread */
#ifndef NO_EXIT_PROG
atexit(maybe_exit);
s.sa_handler = exit_sig;
sigemptyset(&s.sa_mask);
/*sigaddset(&s.sa_mask, SIGUSR1);*/
s.sa_flags = 0;
sigaction(SIGUSR1, &s, 0);
if (prctl(PR_SETEXITSIG, SIGUSR1) < 0)
perror("prctl - PR_SETEXITSIG");
#endif /* NO_EXIT_PROG */
if (usconfig(CONF_ARENATYPE, US_SHAREDONLY) < 0)
perror("usconfig - CONF_ARENATYPE");
usconfig(CONF_LOCKTYPE, US_DEBUG); /* XXX */
@ -227,46 +172,24 @@ long PyThread_get_thread_ident(void)
return getpid();
}
static void do_PyThread_exit_thread(int no_cleanup)
void PyThread_exit_thread(void)
{
dprintf(("PyThread_exit_thread called\n"));
if (!initialized)
if (no_cleanup)
_exit(0);
else
exit(0);
exit(0);
if (ussetlock(count_lock) < 0)
perror("ussetlock (count_lock)");
nthreads--;
if (getpid() == my_pid) {
/* main thread; wait for other threads to exit */
exiting = 1;
#ifndef NO_EXIT_PROG
if (do_exit) {
int i;
/* notify other threads */
clean_threads();
if (nthreads >= 0) {
dprintf(("kill other threads\n"));
for (i = 0; i < maxpidindex; i++)
if (pidlist[i].child > 0)
(void) kill(pidlist[i].child,
SIGKILL);
_exit(exit_status);
}
}
#endif /* NO_EXIT_PROG */
waiting_for_threads = 1;
if (ussetlock(wait_lock) < 0)
perror("ussetlock (wait_lock)");
for (;;) {
if (nthreads < 0) {
dprintf(("really exit (%d)\n", exit_status));
if (no_cleanup)
_exit(exit_status);
else
exit(exit_status);
exit(exit_status);
}
if (usunsetlock(count_lock) < 0)
perror("usunsetlock (count_lock)");
@ -283,50 +206,11 @@ static void do_PyThread_exit_thread(int no_cleanup)
if (usunsetlock(wait_lock) < 0)
perror("usunsetlock (wait_lock)");
}
#ifndef NO_EXIT_PROG
else if (do_exit)
(void) kill(my_pid, SIGUSR1);
#endif /* NO_EXIT_PROG */
if (usunsetlock(count_lock) < 0)
perror("usunsetlock (count_lock)");
_exit(0);
}
void PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
do_exit = 1;
exit_status = status;
do_PyThread_exit_thread(no_cleanup);
}
void PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support.
*/

50
Python/thread_solaris.h
View File

@ -64,59 +64,15 @@ PyThread_get_thread_ident(void)
return thr_self();
}
static void
do_PyThread_exit_thread(int no_cleanup)
{
dprintf(("PyThread_exit_thread called\n"));
if (!initialized)
if (no_cleanup)
_exit(0);
else
exit(0);
thr_exit(0);
}
void
PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void
PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void
do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
dprintf(("PyThread_exit_thread called\n"));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
if (no_cleanup)
_exit(status);
else
exit(status);
exit(0);
thr_exit(0);
}
void
PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void
PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support.
*/

41
Python/thread_wince.h
View File

@ -53,49 +53,14 @@ long PyThread_get_thread_ident(void)
return GetCurrentThreadId();
}
static void do_PyThread_exit_thread(int no_cleanup)
{
dprintf(("%ld: do_PyThread_exit_thread called\n", PyThread_get_thread_ident()));
if (!initialized)
if (no_cleanup)
exit(0); /* XXX - was _exit()!! */
else
exit(0);
_endthread();
}
void PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
dprintf(("%ld: PyThread_exit_thread called\n", PyThread_get_thread_ident()));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
exit(0);
_endthread();
}
void PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support. It has to be implemented using Mutexes, as
* CE doesnt support semaphores. Therefore we use some hacks to