make aio_suspend a cancellation point and properly handle cancellation

diff --git a/src/aio/aio_suspend.c b/src/aio/aio_suspend.c
index dfa524b..08fb5dd 100644 (file)
--- a/src/aio/aio_suspend.c
+++ b/src/aio/aio_suspend.c
@@ -15,6 +15,8 @@ int aio_suspend(const struct aiocb *const cbs[], int cnt, const struct timespec
        int nzcnt = 0;
        const struct aiocb *cb = 0;
 
+       pthread_testcancel();
+
        if (cnt<0) {
                errno = EINVAL;
                return -1;
@@ -61,10 +63,14 @@ int aio_suspend(const struct aiocb *const cbs[], int cnt, const struct timespec
                        break;
                }
 
-               ret = __timedwait(pfut, expect, CLOCK_MONOTONIC, ts?&at:0, 1);
+               ret = __timedwait_cp(pfut, expect, CLOCK_MONOTONIC, ts?&at:0, 1);
 
-               if (ret) {
-                       errno = ret==ETIMEDOUT ? EAGAIN : ret;
+               switch (ret) {
+               case ETIMEDOUT:
+                       ret = EAGAIN;
+               case ECANCELED:
+               case EINTR:
+                       errno = ret;
                        return -1;
                }
        }