add ydb deps

1 files changed, 259 insertions, 0 deletions

diff --git a/contrib/tools/python/src/Python/thread_atheos.h b/contrib/tools/python/src/Python/thread_atheos.h
new file mode 100644
index 0000000000..230594f144
--- /dev/null
+++ b/contrib/tools/python/src/Python/thread_atheos.h
@@ -0,0 +1,259 @@
+/* Threading for AtheOS.
+   Based on thread_beos.h. */
+
+#include <atheos/threads.h>
+#include <atheos/semaphore.h>
+#include <atheos/atomic.h>
+#include <errno.h>
+#include <string.h>
+
+/* Missing decl from threads.h */
+extern int exit_thread(int);
+
+
+/* Undefine FASTLOCK to play with simple semaphores. */
+#define FASTLOCK
+
+
+#ifdef FASTLOCK
+
+/* Use an atomic counter and a semaphore for maximum speed. */
+typedef struct fastmutex {
+    sem_id sem;
+    atomic_t count;
+} fastmutex_t;
+
+
+static int fastmutex_create(const char *name, fastmutex_t * mutex);
+static int fastmutex_destroy(fastmutex_t * mutex);
+static int fastmutex_lock(fastmutex_t * mutex);
+static int fastmutex_timedlock(fastmutex_t * mutex, bigtime_t timeout);
+static int fastmutex_unlock(fastmutex_t * mutex);
+
+
+static int fastmutex_create(const char *name, fastmutex_t * mutex)
+{
+    mutex->count = 0;
+    mutex->sem = create_semaphore(name, 0, 0);
+    return (mutex->sem < 0) ? -1 : 0;
+}
+
+
+static int fastmutex_destroy(fastmutex_t * mutex)
+{
+    if (fastmutex_timedlock(mutex, 0) == 0 || errno == EWOULDBLOCK) {
+        return delete_semaphore(mutex->sem);
+    }
+    return 0;
+}
+
+
+static int fastmutex_lock(fastmutex_t * mutex)
+{
+    atomic_t prev = atomic_add(&mutex->count, 1);
+    if (prev > 0)
+        return lock_semaphore(mutex->sem);
+    return 0;
+}
+
+
+static int fastmutex_timedlock(fastmutex_t * mutex, bigtime_t timeout)
+{
+    atomic_t prev = atomic_add(&mutex->count, 1);
+    if (prev > 0)
+        return lock_semaphore_x(mutex->sem, 1, 0, timeout);
+    return 0;
+}
+
+
+static int fastmutex_unlock(fastmutex_t * mutex)
+{
+    atomic_t prev = atomic_add(&mutex->count, -1);
+    if (prev > 1)
+        return unlock_semaphore(mutex->sem);
+    return 0;
+}
+
+
+#endif                          /* FASTLOCK */
+
+
+/*
+ * Initialization.
+ *
+ */
+static void PyThread__init_thread(void)
+{
+    /* Do nothing. */
+    return;
+}
+
+
+/*
+ * Thread support.
+ *
+ */
+
+static atomic_t thread_count = 0;
+
+long PyThread_start_new_thread(void (*func) (void *), void *arg)
+{
+    status_t success = -1;
+    thread_id tid;
+    char name[OS_NAME_LENGTH];
+    atomic_t this_thread;
+
+    dprintf(("PyThread_start_new_thread called\n"));
+
+    this_thread = atomic_add(&thread_count, 1);
+    PyOS_snprintf(name, sizeof(name), "python thread (%d)", this_thread);
+
+    tid = spawn_thread(name, func, NORMAL_PRIORITY, 0, arg);
+    if (tid < 0) {
+        dprintf(("PyThread_start_new_thread spawn_thread failed: %s\n", strerror(errno)));
+    } else {
+        success = resume_thread(tid);
+        if (success < 0) {
+            dprintf(("PyThread_start_new_thread resume_thread failed: %s\n", strerror(errno)));
+        }
+    }
+
+    return (success < 0 ? -1 : tid);
+}
+
+
+long PyThread_get_thread_ident(void)
+{
+    return get_thread_id(NULL);
+}
+
+
+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(). */
+        exit(0);
+    } else {
+        /* We're a thread */
+        exit_thread(0);
+    }
+}
+
+
+/*
+ * Lock support.
+ *
+ */
+
+static atomic_t lock_count = 0;
+
+PyThread_type_lock PyThread_allocate_lock(void)
+{
+#ifdef FASTLOCK
+    fastmutex_t *lock;
+#else
+    sem_id sema;
+#endif
+    char name[OS_NAME_LENGTH];
+    atomic_t this_lock;
+
+    dprintf(("PyThread_allocate_lock called\n"));
+
+#ifdef FASTLOCK
+    lock = (fastmutex_t *) malloc(sizeof(fastmutex_t));
+    if (lock == NULL) {
+        dprintf(("PyThread_allocate_lock failed: out of memory\n"));
+        return (PyThread_type_lock) NULL;
+    }
+#endif
+    this_lock = atomic_add(&lock_count, 1);
+    PyOS_snprintf(name, sizeof(name), "python lock (%d)", this_lock);
+
+#ifdef FASTLOCK
+    if (fastmutex_create(name, lock) < 0) {
+        dprintf(("PyThread_allocate_lock failed: %s\n",
+                 strerror(errno)));
+        free(lock);
+        lock = NULL;
+    }
+    dprintf(("PyThread_allocate_lock()-> %p\n", lock));
+    return (PyThread_type_lock) lock;
+#else
+    sema = create_semaphore(name, 1, 0);
+    if (sema < 0) {
+        dprintf(("PyThread_allocate_lock failed: %s\n",
+                 strerror(errno)));
+        sema = 0;
+    }
+    dprintf(("PyThread_allocate_lock()-> %p\n", sema));
+    return (PyThread_type_lock) sema;
+#endif
+}
+
+
+void PyThread_free_lock(PyThread_type_lock lock)
+{
+    dprintf(("PyThread_free_lock(%p) called\n", lock));
+
+#ifdef FASTLOCK
+    if (fastmutex_destroy((fastmutex_t *) lock) < 0) {
+        dprintf(("PyThread_free_lock(%p) failed: %s\n", lock,
+                 strerror(errno)));
+    }
+    free(lock);
+#else
+    if (delete_semaphore((sem_id) lock) < 0) {
+        dprintf(("PyThread_free_lock(%p) failed: %s\n", lock,
+                 strerror(errno)));
+    }
+#endif
+}
+
+
+int PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
+{
+    int retval;
+
+    dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock,
+             waitflag));
+
+#ifdef FASTLOCK
+    if (waitflag)
+        retval = fastmutex_lock((fastmutex_t *) lock);
+    else
+        retval = fastmutex_timedlock((fastmutex_t *) lock, 0);
+#else
+    if (waitflag)
+        retval = lock_semaphore((sem_id) lock);
+    else
+        retval = lock_semaphore_x((sem_id) lock, 1, 0, 0);
+#endif
+    if (retval < 0) {
+        dprintf(("PyThread_acquire_lock(%p, %d) failed: %s\n",
+                 lock, waitflag, strerror(errno)));
+    }
+    dprintf(("PyThread_acquire_lock(%p, %d)-> %d\n", lock, waitflag,
+             retval));
+    return retval < 0 ? 0 : 1;
+}
+
+
+void PyThread_release_lock(PyThread_type_lock lock)
+{
+    dprintf(("PyThread_release_lock(%p) called\n", lock));
+
+#ifdef FASTLOCK
+    if (fastmutex_unlock((fastmutex_t *) lock) < 0) {
+        dprintf(("PyThread_release_lock(%p) failed: %s\n", lock,
+                 strerror(errno)));
+    }
+#else
+    if (unlock_semaphore((sem_id) lock) < 0) {
+        dprintf(("PyThread_release_lock(%p) failed: %s\n", lock,
+                 strerror(errno)));
+    }
+#endif
+}