* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#include "utils.h"
+#include <sys/mman.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
+#include "utils.h"
#define foreach_arg(_arg, _addr, _len, _first_addr, _first_len) \
for (_addr = (_first_addr), _len = (_first_len); \
_addr; \
_addr = va_arg(_arg, void **), _len = _addr ? va_arg(_arg, size_t) : 0)
+#define C_PTR_ALIGN (sizeof(size_t))
+#define C_PTR_MASK (-C_PTR_ALIGN)
+
void *__calloc_a(size_t len, ...)
{
va_list ap, ap1;
va_copy(ap1, ap);
foreach_arg(ap1, cur_addr, cur_len, &ret, len)
- alloc_len += cur_len;
+ alloc_len += (cur_len + C_PTR_ALIGN - 1 ) & C_PTR_MASK;
va_end(ap1);
ptr = calloc(1, alloc_len);
+ if (!ptr) {
+ va_end(ap);
+ return NULL;
+ }
+
alloc_len = 0;
foreach_arg(ap, cur_addr, cur_len, &ret, len) {
*cur_addr = &ptr[alloc_len];
- alloc_len += cur_len;
+ alloc_len += (cur_len + C_PTR_ALIGN - 1) & C_PTR_MASK;
}
va_end(ap);
return ret;
}
-#ifdef __APPLE__
+#ifdef LIBUBOX_COMPAT_CLOCK_GETTIME
#include <mach/mach_host.h> /* host_get_clock_service() */
#include <mach/mach_port.h> /* mach_port_deallocate() */
#include <mach/mach_init.h> /* mach_host_self(), mach_task_self() */
}
#endif
+
+void *cbuf_alloc(unsigned int order)
+{
+ char path[] = "/tmp/cbuf-XXXXXX";
+ unsigned long size = cbuf_size(order);
+ void *ret = NULL;
+ int fd;
+
+ fd = mkstemp(path);
+ if (fd < 0)
+ return NULL;
+
+ if (unlink(path))
+ goto close;
+
+ if (ftruncate(fd, cbuf_size(order)))
+ goto close;
+
+#ifndef MAP_ANONYMOUS
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+
+ ret = mmap(NULL, size * 2, PROT_NONE, MAP_ANON | MAP_PRIVATE, -1, 0);
+ if (ret == MAP_FAILED) {
+ ret = NULL;
+ goto close;
+ }
+
+ if (mmap(ret, size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED,
+ fd, 0) != ret ||
+ mmap(ret + size, size, PROT_READ | PROT_WRITE,
+ MAP_FIXED | MAP_SHARED, fd, 0) != ret + size) {
+ munmap(ret, size * 2);
+ ret = NULL;
+ }
+
+close:
+ close(fd);
+ return ret;
+}
+
+void cbuf_free(void *ptr, unsigned int order)
+{
+ munmap(ptr, cbuf_size(order) * 2);
+}