add ydb deps

1 files changed, 178 insertions, 0 deletions

diff --git a/contrib/tools/python/src/Python/thread_pth.h b/contrib/tools/python/src/Python/thread_pth.h
new file mode 100644
index 0000000000..82a00e72ba
--- /dev/null
+++ b/contrib/tools/python/src/Python/thread_pth.h
@@ -0,0 +1,178 @@
+
+/* 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;
+}
+
+void PyThread_exit_thread(void)
+{
+    dprintf(("PyThread_exit_thread called\n"));
+    if (!initialized) {
+        exit(0);
+    }
+}
+
+/*
+ * 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");
+}