auto import from //depot/cupcake/@135843

1 files changed, 0 insertions, 212 deletions

diff --git a/libc/bionic/semaphore.c b/libc/bionic/semaphore.c
deleted file mode 100644
index 0c94600..0000000
--- a/libc/bionic/semaphore.c
+++ /dev/null
@@ -1,212 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#include <semaphore.h>
-#include <errno.h>
-#include <sys/time.h>
-#include <sys/atomics.h>
-#include <time.h>
-
-int sem_init(sem_t *sem, int pshared, unsigned int value)
-{
-    if (sem == NULL) {
-        errno = EINVAL;
-        return -1;
-    }
-
-    if (pshared != 0) {
-        errno = ENOSYS;
-        return -1;
-    }
-
-    sem->count = value;
-    return 0;
-}
-
-
-int sem_destroy(sem_t *sem)
-{
-    if (sem == NULL) {
-        errno = EINVAL;
-        return -1;
-    }
-    if (sem->count == 0) {
-        errno = EBUSY;
-        return -1;
-    }
-    return 0;
-}
-
-
-sem_t *sem_open(const char *name, int oflag, ...)
-{
-    name=name;
-    oflag=oflag;
-
-    errno = ENOSYS;
-    return SEM_FAILED;
-}
-
-
-int sem_close(sem_t *sem)
-{
-    if (sem == NULL) {
-        errno = EINVAL;
-        return -1;
-    }
-    errno = ENOSYS;
-    return -1;
-}
-
-
-int sem_unlink(const char * name)
-{
-    errno = ENOSYS;
-    return -1;
-}
-
-
-static int
-__atomic_dec_if_positive( volatile unsigned int*  pvalue )
-{
-    unsigned int  old;
-
-    do {
-        old = *pvalue;
-    }
-    while ( old != 0 && __atomic_cmpxchg( (int)old, (int)old-1, (volatile int*)pvalue ) != 0 );
-
-    return old;
-}
-
-int sem_wait(sem_t *sem)
-{
-    if (sem == NULL) {
-        errno = EINVAL;
-        return -1;
-    }
-
-    for (;;) {
-        if (__atomic_dec_if_positive(&sem->count))
-            break;
-
-        __futex_wait(&sem->count, 0, 0);
-    }
-    return 0;
-}
-
-int sem_timedwait(sem_t *sem, const struct timespec *abs_timeout)
-{
-    int  ret;
-
-    if (sem == NULL) {
-        errno = EINVAL;
-        return -1;
-    }
-
-    /* POSIX says we need to try to decrement the semaphore
-     * before checking the timeout value */
-    if (__atomic_dec_if_positive(&sem->count))
-        return 0;
-
-    /* check it as per Posix */
-    if (abs_timeout == NULL    ||
-        abs_timeout->tv_sec < 0 ||
-        abs_timeout->tv_nsec < 0 ||
-        abs_timeout->tv_nsec >= 1000000000)
-    {
-        errno = EINVAL;
-        return -1;
-    }
-
-    for (;;) {
-        struct timespec ts;
-        int             ret;
-
-        /* Posix mandates CLOCK_REALTIME here */
-        clock_gettime( CLOCK_REALTIME, &ts );
-        ts.tv_sec  = abs_timeout->tv_sec - ts.tv_sec;
-        ts.tv_nsec = abs_timeout->tv_nsec - ts.tv_nsec;
-        if (ts.tv_nsec < 0) {
-            ts.tv_nsec += 1000000000;
-            ts.tv_sec  -= 1;
-        }
-
-        if (ts.tv_sec < 0 || ts.tv_nsec < 0) {
-            errno = ETIMEDOUT;
-            return -1;
-        }
-
-        ret = __futex_wait(&sem->count, 0, &ts);
-
-        /* return in case of timeout or interrupt */
-        if (ret == -ETIMEDOUT || ret == -EINTR) {
-            errno = -ret;
-            return -1;
-        }
-
-        if (__atomic_dec_if_positive(&sem->count))
-            break;
-    }
-    return 0;
-}
-
-int sem_post(sem_t *sem)
-{
-    if (sem == NULL)
-        return EINVAL;
-
-    if (__atomic_inc((volatile int*)&sem->count) == 0)
-        __futex_wake(&sem->count, 1);
-
-    return 0;
-}
-
-int  sem_trywait(sem_t *sem)
-{
-    if (sem == NULL) {
-        errno = EINVAL;
-        return -1;
-    }
-
-    if (__atomic_dec_if_positive(&sem->count) > 0) {
-        return 0;
-    } else {
-        return EAGAIN;
-    }
-}
-
-int  sem_getvalue(sem_t *sem, int *sval)
-{
-    if (sem == NULL || sval == NULL) {
-        errno = EINVAL;
-        return -1;
-    }
-
-    *sval = sem->count;
-    return 0;
-}