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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "memwrap.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#define RETRY_SEC 0
#define RETRY_NSEC 250000000
#define MSG_BUF_LEN 256
static void show_errmsg (void) {
int errno_backup = errno;
const char fail_msg[] = "Fail to allocate memory: ";
const size_t fail_len = LBS_STR_STATIC_STRLEN (fail_msg);
write (STDERR_FILENO, fail_msg, fail_len);
char err_msg[MSG_BUF_LEN];
size_t err_len;
if (strerror_r (errno_backup, err_msg, MSG_BUF_LEN)) {
const char unknown_msg[] = "Unknown error code";
const size_t unknown_len = LBS_STR_STATIC_STRLEN (unknown_msg);
write (STDERR_FILENO, unknown_msg, unknown_len);
} else {
err_len = strlen (err_msg);
write (STDERR_FILENO, err_msg, err_len);
}
const char retry_msg[] = ". Retry ...\n";
const size_t retry_len = LBS_STR_STATIC_STRLEN (retry_msg);
write (STDERR_FILENO, retry_msg, retry_len);
errno = errno_backup;
}
void* xmalloc (size_t size) {
void* memptr;
while ((memptr = malloc (size)) == NULL) {
show_errmsg ();
nanosleep (&(struct timespec) { RETRY_SEC, RETRY_NSEC }, NULL);
}
return memptr;
}
void* xrealloc (void* ptr, size_t size) {
void* newptr;
while ((newptr = realloc (ptr, size)) == NULL) {
show_errmsg ();
nanosleep (&(struct timespec) { RETRY_SEC, RETRY_NSEC }, NULL);
}
return newptr;
}
char* xstrdup (const char* str) {
char* newstr;
while ((newstr = strdup (str)) == NULL) {
show_errmsg ();
nanosleep (&(struct timespec) { RETRY_SEC, RETRY_NSEC }, NULL);
}
return newstr;
}
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