project-base/server-skynet-source-3rd-jemalloc
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement the *allocx() API.

Browse Source 
Implement the *allocx() API, which is a successor to the *allocm() API.
The *allocx() functions are slightly simpler to use because they have
fewer parameters, they directly return the results of primary interest,
and mallocx()/rallocx() avoid the strict aliasing pitfall that
allocm()/rallocx() share with posix_memalign().  The following code
violates strict aliasing rules:

    foo_t *foo;
    allocm((void **)&foo, NULL, 42, 0);

whereas the following is safe:

    foo_t *foo;
    void *p;
    allocm(&p, NULL, 42, 0);
    foo = (foo_t *)p;

mallocx() does not have this problem:

    foo_t *foo = (foo_t *)mallocx(42, 0);
This commit is contained in:
Jason Evans
2013-12-12 22:35:52 -08:00
parent 0ac396a06a
commit d82a5e6a34
19 changed files with 954 additions and 365 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
test/unit/mq.c
View File

@@ -39,8 +39,7 @@ thd_receiver_start(void *arg)
for (i = 0; i < (NSENDERS * NMSGS); i++) {
mq_msg_t *msg = mq_get(mq);
assert_ptr_not_null(msg, "mq_get() should never return NULL");
assert_d_eq(jet_dallocm(msg, 0), ALLOCM_SUCCESS,
"Unexpected dallocm() failure");
jet_dallocx(msg, 0);
}
return (NULL);
}
@@ -54,8 +53,8 @@ thd_sender_start(void *arg)
for (i = 0; i < NMSGS; i++) {
mq_msg_t *msg;
void *p;
assert_d_eq(jet_allocm(&p, NULL, sizeof(mq_msg_t), 0),
ALLOCM_SUCCESS, "Unexpected allocm() failure");
p = jet_mallocx(sizeof(mq_msg_t), 0);
assert_ptr_not_null(p, "Unexpected allocm() failure");
msg = (mq_msg_t *)p;
mq_put(mq, msg);
}