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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
static nxt_log_moderation_t nxt_malloc_log_moderation = {
NXT_LOG_ALERT, 2, "memory allocation failed", NXT_LOG_MODERATION
};
static nxt_log_t *
nxt_malloc_log(void)
{
nxt_thread_t *thr;
thr = nxt_thread();
if (thr != NULL && thr->log != NULL) {
return thr->log;
}
return &nxt_main_log;
}
void *
nxt_malloc(size_t size)
{
void *p;
p = malloc(size);
if (nxt_fast_path(p != NULL)) {
nxt_log_debug(nxt_malloc_log(), "malloc(%uz): %p", size, p);
} else {
nxt_log_alert_moderate(&nxt_malloc_log_moderation, nxt_malloc_log(),
"malloc(%uz) failed %E", size, nxt_errno);
}
return p;
}
void *
nxt_zalloc(size_t size)
{
void *p;
p = nxt_malloc(size);
if (nxt_fast_path(p != NULL)) {
nxt_memzero(p, size);
}
return p;
}
void *
nxt_realloc(void *p, size_t size)
{
void *n;
uintptr_t ptr;
/*
* Workaround for a warning on GCC 12 about using "p" pointer in debug log
* after realloc().
*/
ptr = (uintptr_t) p;
n = realloc(p, size);
if (nxt_fast_path(n != NULL)) {
nxt_log_debug(nxt_malloc_log(), "realloc(%p, %uz): %p", ptr, size, n);
} else {
nxt_log_alert_moderate(&nxt_malloc_log_moderation, nxt_malloc_log(),
"realloc(%p, %uz) failed %E",
ptr, size, nxt_errno);
}
return n;
}
/* nxt_lvlhsh_* functions moved here to avoid references from nxt_lvlhsh.c. */
void *
nxt_lvlhsh_alloc(void *data, size_t size)
{
return nxt_memalign(size, size);
}
void
nxt_lvlhsh_free(void *data, void *p)
{
nxt_free(p);
}
#if (NXT_DEBUG)
void
nxt_free(void *p)
{
nxt_log_debug(nxt_malloc_log(), "free(%p)", p);
free(p);
}
#endif
#if (NXT_HAVE_POSIX_MEMALIGN)
/*
* posix_memalign() presents in Linux glibc 2.1.91, FreeBSD 7.0,
* Solaris 11, MacOSX 10.6 (Snow Leopard), NetBSD 5.0.
*/
void *
nxt_memalign(size_t alignment, size_t size)
{
void *p;
nxt_err_t err;
err = posix_memalign(&p, alignment, size);
if (nxt_fast_path(err == 0)) {
nxt_thread_log_debug("posix_memalign(%uz, %uz): %p",
alignment, size, p);
return p;
}
nxt_log_alert_moderate(&nxt_malloc_log_moderation, nxt_malloc_log(),
"posix_memalign(%uz, %uz) failed %E",
alignment, size, err);
return NULL;
}
#elif (NXT_HAVE_MEMALIGN)
/* memalign() presents in Solaris, HP-UX. */
void *
nxt_memalign(size_t alignment, size_t size)
{
void *p;
p = memalign(alignment, size);
if (nxt_fast_path(p != NULL)) {
nxt_thread_log_debug("memalign(%uz, %uz): %p",
alignment, size, p);
return p;
}
nxt_log_alert_moderate(&nxt_malloc_log_moderation, nxt_malloc_log(),
"memalign(%uz, %uz) failed %E",
alignment, size, nxt_errno);
return NULL;
}
#elif (NXT_FREEBSD)
/*
* FreeBSD prior to 7.0 lacks posix_memalign(), but if a requested size
* is lesser than or equal to 4K, then phkmalloc aligns the size to the
* next highest power of 2 and allocates memory with the same alignment.
* Allocations larger than 2K are always aligned to 4K.
*/
void *
nxt_memalign(size_t alignment, size_t size)
{
size_t aligned_size;
u_char *p;
nxt_err_t err;
if (nxt_slow_path((alignment - 1) & alignment) != 0) {
/* Alignment must be a power of 2. */
err = NXT_EINVAL;
goto fail;
}
if (nxt_slow_path(alignment > 4096)) {
err = NXT_EOPNOTSUPP;
goto fail;
}
if (nxt_fast_path(size <= 2048)) {
aligned_size = nxt_max(size, alignment);
} else {
/* Align to 4096. */
aligned_size = size;
}
p = malloc(aligned_size);
if (nxt_fast_path(p != NULL)) {
nxt_thread_log_debug("nxt_memalign(%uz, %uz): %p", alignment, size, p);
} else {
nxt_log_alert_moderate(&nxt_malloc_log_moderation, nxt_malloc_log(),
"malloc(%uz) failed %E", size, nxt_errno);
}
return p;
fail:
nxt_thread_log_alert("nxt_memalign(%uz, %uz) failed %E",
alignment, size, err);
return NULL;
}
#else
#error no memalign() implementation.
#endif
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