Issue #7111: Python can now be run without a stdin, stdout or stderr stream.

It was already the case with Python 2.  However, the corresponding
sys module entries are now set to None (instead of an unusable file object).

1 files changed, 0 insertions, 259 deletions

diff --git a/Python/thread_sgi.h b/Python/thread_sgi.h
deleted file mode 100644
index 771ab2cc60..0000000000
--- a/Python/thread_sgi.h
+++ /dev/null
@@ -1,259 +0,0 @@
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/prctl.h>
-#include <ulocks.h>
-#include <errno.h>
-
-#define HDR_SIZE        2680    /* sizeof(ushdr_t) */
-#define MAXPROC         100     /* max # of threads that can be started */
-
-static usptr_t *shared_arena;
-static ulock_t count_lock;      /* protection for some variables */
-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;
-static int exiting;             /* we're already exiting (for maybe_exit) */
-static pid_t my_pid;            /* PID of main thread */
-static struct pidlist {
-    pid_t parent;
-    pid_t child;
-} pidlist[MAXPROC];     /* PIDs of other threads; protected by count_lock */
-static int maxpidindex;         /* # of PIDs in pidlist */
-/*
- * Initialization.
- */
-static void PyThread__init_thread(void)
-{
-#ifdef USE_DL
-    long addr, size;
-#endif /* USE_DL */
-
-
-#ifdef USE_DL
-    if ((size = usconfig(CONF_INITSIZE, 64*1024)) < 0)
-        perror("usconfig - CONF_INITSIZE (check)");
-    if (usconfig(CONF_INITSIZE, size) < 0)
-        perror("usconfig - CONF_INITSIZE (reset)");
-    addr = (long) dl_getrange(size + HDR_SIZE);
-    dprintf(("trying to use addr %p-%p for shared arena\n", addr, addr+size));
-    errno = 0;
-    if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 && errno != 0)
-        perror("usconfig - CONF_ATTACHADDR (set)");
-#endif /* USE_DL */
-    if (usconfig(CONF_INITUSERS, 16) < 0)
-        perror("usconfig - CONF_INITUSERS");
-    my_pid = getpid();          /* so that we know which is the main thread */
-    if (usconfig(CONF_ARENATYPE, US_SHAREDONLY) < 0)
-        perror("usconfig - CONF_ARENATYPE");
-    usconfig(CONF_LOCKTYPE, US_DEBUG); /* XXX */
-#ifdef Py_DEBUG
-    if (thread_debug & 4)
-        usconfig(CONF_LOCKTYPE, US_DEBUGPLUS);
-    else if (thread_debug & 2)
-        usconfig(CONF_LOCKTYPE, US_DEBUG);
-#endif /* Py_DEBUG */
-    if ((shared_arena = usinit(tmpnam(0))) == 0)
-        perror("usinit");
-#ifdef USE_DL
-    if (usconfig(CONF_ATTACHADDR, addr) < 0) /* reset address */
-        perror("usconfig - CONF_ATTACHADDR (reset)");
-#endif /* USE_DL */
-    if ((count_lock = usnewlock(shared_arena)) == NULL)
-        perror("usnewlock (count_lock)");
-    (void) usinitlock(count_lock);
-    if ((wait_lock = usnewlock(shared_arena)) == NULL)
-        perror("usnewlock (wait_lock)");
-    dprintf(("arena start: %p, arena size: %ld\n",  shared_arena, (long) usconfig(CONF_GETSIZE, shared_arena)));
-}
-
-/*
- * Thread support.
- */
-
-static void clean_threads(void)
-{
-    int i, j;
-    pid_t mypid, pid;
-
-    /* clean up any exited threads */
-    mypid = getpid();
-    i = 0;
-    while (i < maxpidindex) {
-        if (pidlist[i].parent == mypid && (pid = pidlist[i].child) > 0) {
-            pid = waitpid(pid, 0, WNOHANG);
-            if (pid > 0) {
-                /* a thread has exited */
-                pidlist[i] = pidlist[--maxpidindex];
-                /* remove references to children of dead proc */
-                for (j = 0; j < maxpidindex; j++)
-                    if (pidlist[j].parent == pid)
-                        pidlist[j].child = -1;
-                continue; /* don't increment i */
-            }
-        }
-        i++;
-    }
-    /* clean up the list */
-    i = 0;
-    while (i < maxpidindex) {
-        if (pidlist[i].child == -1) {
-            pidlist[i] = pidlist[--maxpidindex];
-            continue; /* don't increment i */
-        }
-        i++;
-    }
-}
-
-long PyThread_start_new_thread(void (*func)(void *), void *arg)
-{
-#ifdef USE_DL
-    long addr, size;
-    static int local_initialized = 0;
-#endif /* USE_DL */
-    int success = 0;            /* init not needed when SOLARIS_THREADS and */
-                /* C_THREADS implemented properly */
-
-    dprintf(("PyThread_start_new_thread called\n"));
-    if (!initialized)
-        PyThread_init_thread();
-    switch (ussetlock(count_lock)) {
-    case 0: return 0;
-    case -1: perror("ussetlock (count_lock)");
-    }
-    if (maxpidindex >= MAXPROC)
-        success = -1;
-    else {
-#ifdef USE_DL
-        if (!local_initialized) {
-            if ((size = usconfig(CONF_INITSIZE, 64*1024)) < 0)
-                perror("usconfig - CONF_INITSIZE (check)");
-            if (usconfig(CONF_INITSIZE, size) < 0)
-                perror("usconfig - CONF_INITSIZE (reset)");
-            addr = (long) dl_getrange(size + HDR_SIZE);
-            dprintf(("trying to use addr %p-%p for sproc\n",
-                     addr, addr+size));
-            errno = 0;
-            if ((addr = usconfig(CONF_ATTACHADDR, addr)) < 0 &&
-                errno != 0)
-                perror("usconfig - CONF_ATTACHADDR (set)");
-        }
-#endif /* USE_DL */
-        clean_threads();
-        if ((success = sproc(func, PR_SALL, arg)) < 0)
-            perror("sproc");
-#ifdef USE_DL
-        if (!local_initialized) {
-            if (usconfig(CONF_ATTACHADDR, addr) < 0)
-                /* reset address */
-                perror("usconfig - CONF_ATTACHADDR (reset)");
-            local_initialized = 1;
-        }
-#endif /* USE_DL */
-        if (success >= 0) {
-            nthreads++;
-            pidlist[maxpidindex].parent = getpid();
-            pidlist[maxpidindex++].child = success;
-            dprintf(("pidlist[%d] = %d\n",
-                     maxpidindex-1, success));
-        }
-    }
-    if (usunsetlock(count_lock) < 0)
-        perror("usunsetlock (count_lock)");
-    return success;
-}
-
-long PyThread_get_thread_ident(void)
-{
-    return getpid();
-}
-
-void PyThread_exit_thread(void)
-{
-    dprintf(("PyThread_exit_thread called\n"));
-    if (!initialized)
-        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;
-        waiting_for_threads = 1;
-        if (ussetlock(wait_lock) < 0)
-            perror("ussetlock (wait_lock)");
-        for (;;) {
-            if (nthreads < 0) {
-                dprintf(("really exit (%d)\n", exit_status));
-                exit(exit_status);
-            }
-            if (usunsetlock(count_lock) < 0)
-                perror("usunsetlock (count_lock)");
-            dprintf(("waiting for other threads (%d)\n", nthreads));
-            if (ussetlock(wait_lock) < 0)
-                perror("ussetlock (wait_lock)");
-            if (ussetlock(count_lock) < 0)
-                perror("ussetlock (count_lock)");
-        }
-    }
-    /* not the main thread */
-    if (waiting_for_threads) {
-        dprintf(("main thread is waiting\n"));
-        if (usunsetlock(wait_lock) < 0)
-            perror("usunsetlock (wait_lock)");
-    }
-    if (usunsetlock(count_lock) < 0)
-        perror("usunsetlock (count_lock)");
-    _exit(0);
-}
-
-/*
- * Lock support.
- */
-PyThread_type_lock PyThread_allocate_lock(void)
-{
-    ulock_t lock;
-
-    dprintf(("PyThread_allocate_lock called\n"));
-    if (!initialized)
-        PyThread_init_thread();
-
-    if ((lock = usnewlock(shared_arena)) == NULL)
-        perror("usnewlock");
-    (void) usinitlock(lock);
-    dprintf(("PyThread_allocate_lock() -> %p\n", lock));
-    return (PyThread_type_lock) lock;
-}
-
-void PyThread_free_lock(PyThread_type_lock lock)
-{
-    dprintf(("PyThread_free_lock(%p) called\n", lock));
-    usfreelock((ulock_t) lock, shared_arena);
-}
-
-int PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
-{
-    int success;
-
-    dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
-    errno = 0;                  /* clear it just in case */
-    if (waitflag)
-        success = ussetlock((ulock_t) lock);
-    else
-        success = uscsetlock((ulock_t) lock, 1); /* Try it once */
-    if (success < 0)
-        perror(waitflag ? "ussetlock" : "uscsetlock");
-    dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
-    return success;
-}
-
-void PyThread_release_lock(PyThread_type_lock lock)
-{
-    dprintf(("PyThread_release_lock(%p) called\n", lock));
-    if (usunsetlock((ulock_t) lock) < 0)
-        perror("usunsetlock");
-}