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authorOri Bernstein <ori@eigenstate.org>2021-06-14 00:00:37 +0000
committerOri Bernstein <ori@eigenstate.org>2021-06-14 00:00:37 +0000
commita73a964e51247ed169d322c725a3a18859f109a3 (patch)
tree3f752d117274d444bda44e85609aeac1acf313f3 /sys/src/cmd/python/Python/thread_pth.h
parente64efe273fcb921a61bf27d33b230c4e64fcd425 (diff)
python, hg: tow outside the environment.
they've served us well, and can ride off into the sunset.
Diffstat (limited to 'sys/src/cmd/python/Python/thread_pth.h')
-rw-r--r--sys/src/cmd/python/Python/thread_pth.h213
1 files changed, 0 insertions, 213 deletions
diff --git a/sys/src/cmd/python/Python/thread_pth.h b/sys/src/cmd/python/Python/thread_pth.h
deleted file mode 100644
index 8c7dbe925..000000000
--- a/sys/src/cmd/python/Python/thread_pth.h
+++ /dev/null
@@ -1,213 +0,0 @@
-
-/* GNU pth threads interface
- http://www.gnu.org/software/pth
- 2000-05-03 Andy Dustman <andy@dustman.net>
-
- Adapted from Posix threads interface
- 12 May 1997 -- david arnold <davida@pobox.com>
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <pth.h>
-
-/* A pth mutex isn't sufficient to model the Python lock type
- * because pth mutexes can be acquired multiple times by the
- * same thread.
- *
- * The pth_lock struct implements a Python lock as a "locked?" bit
- * and a <condition, mutex> pair. In general, if the bit can be acquired
- * instantly, it is, else the pair is used to block the thread until the
- * bit is cleared.
- */
-
-typedef struct {
- char locked; /* 0=unlocked, 1=locked */
- /* a <cond, mutex> pair to handle an acquire of a locked lock */
- pth_cond_t lock_released;
- pth_mutex_t mut;
-} pth_lock;
-
-#define CHECK_STATUS(name) if (status == -1) { printf("%d ", status); perror(name); error = 1; }
-
-pth_attr_t PyThread_attr;
-
-/*
- * Initialization.
- */
-
-static void PyThread__init_thread(void)
-{
- pth_init();
- PyThread_attr = pth_attr_new();
- pth_attr_set(PyThread_attr, PTH_ATTR_STACK_SIZE, 1<<18);
- pth_attr_set(PyThread_attr, PTH_ATTR_JOINABLE, FALSE);
-}
-
-/*
- * Thread support.
- */
-
-
-long PyThread_start_new_thread(void (*func)(void *), void *arg)
-{
- pth_t th;
- dprintf(("PyThread_start_new_thread called\n"));
- if (!initialized)
- PyThread_init_thread();
-
- th = pth_spawn(PyThread_attr,
- (void* (*)(void *))func,
- (void *)arg
- );
-
- return th;
-}
-
-long PyThread_get_thread_ident(void)
-{
- volatile pth_t threadid;
- if (!initialized)
- PyThread_init_thread();
- /* Jump through some hoops for Alpha OSF/1 */
- threadid = pth_self();
- return (long) *(long *) &threadid;
-}
-
-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));
- 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.
- */
-PyThread_type_lock PyThread_allocate_lock(void)
-{
- pth_lock *lock;
- int status, error = 0;
-
- dprintf(("PyThread_allocate_lock called\n"));
- if (!initialized)
- PyThread_init_thread();
-
- lock = (pth_lock *) malloc(sizeof(pth_lock));
- memset((void *)lock, '\0', sizeof(pth_lock));
- if (lock) {
- lock->locked = 0;
- status = pth_mutex_init(&lock->mut);
- CHECK_STATUS("pth_mutex_init");
- status = pth_cond_init(&lock->lock_released);
- CHECK_STATUS("pth_cond_init");
- if (error) {
- free((void *)lock);
- lock = NULL;
- }
- }
- dprintf(("PyThread_allocate_lock() -> %p\n", lock));
- return (PyThread_type_lock) lock;
-}
-
-void PyThread_free_lock(PyThread_type_lock lock)
-{
- pth_lock *thelock = (pth_lock *)lock;
-
- dprintf(("PyThread_free_lock(%p) called\n", lock));
-
- free((void *)thelock);
-}
-
-int PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
-{
- int success;
- pth_lock *thelock = (pth_lock *)lock;
- int status, error = 0;
-
- dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
-
- status = pth_mutex_acquire(&thelock->mut, !waitflag, NULL);
- CHECK_STATUS("pth_mutex_acquire[1]");
- success = thelock->locked == 0;
- if (success) thelock->locked = 1;
- status = pth_mutex_release( &thelock->mut );
- CHECK_STATUS("pth_mutex_release[1]");
-
- if ( !success && waitflag ) {
- /* continue trying until we get the lock */
-
- /* mut must be locked by me -- part of the condition
- * protocol */
- status = pth_mutex_acquire( &thelock->mut, !waitflag, NULL );
- CHECK_STATUS("pth_mutex_acquire[2]");
- while ( thelock->locked ) {
- status = pth_cond_await(&thelock->lock_released,
- &thelock->mut, NULL);
- CHECK_STATUS("pth_cond_await");
- }
- thelock->locked = 1;
- status = pth_mutex_release( &thelock->mut );
- CHECK_STATUS("pth_mutex_release[2]");
- success = 1;
- }
- if (error) success = 0;
- dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
- return success;
-}
-
-void PyThread_release_lock(PyThread_type_lock lock)
-{
- pth_lock *thelock = (pth_lock *)lock;
- int status, error = 0;
-
- dprintf(("PyThread_release_lock(%p) called\n", lock));
-
- status = pth_mutex_acquire( &thelock->mut, 0, NULL );
- CHECK_STATUS("pth_mutex_acquire[3]");
-
- thelock->locked = 0;
-
- status = pth_mutex_release( &thelock->mut );
- CHECK_STATUS("pth_mutex_release[3]");
-
- /* wake up someone (anyone, if any) waiting on the lock */
- status = pth_cond_notify( &thelock->lock_released, 0 );
- CHECK_STATUS("pth_cond_notify");
-}