You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
/*
|
|
* grow.c: generic growing array implementation
|
|
*/
|
|
|
|
#include <syslog.h>
|
|
|
|
#include "grow.h"
|
|
#include "config.h"
|
|
|
|
struct grow *grow_init(bool dealloc) {
|
|
struct grow *g = malloc(sizeof(struct grow));
|
|
if (g == NULL) {
|
|
syslog(cfg_log_facility | LOG_ERR, "grow: Could not initialize growing array: %m");
|
|
return NULL;
|
|
}
|
|
g -> arr = NULL;
|
|
g -> elems = 0;
|
|
g -> alloc = 0;
|
|
g -> active_elems = 0;
|
|
g -> dealloc = dealloc;
|
|
return g;
|
|
}
|
|
|
|
bool grow_push (void *val, struct grow *g) {
|
|
if (g -> alloc <= g -> elems) {
|
|
uint64_t new_size = g -> alloc == 0? 1 : 2* (g -> alloc);
|
|
void **new_arr = realloc(g -> arr, new_size * sizeof(void *));
|
|
if (new_arr == NULL) {
|
|
syslog(cfg_log_facility | LOG_ERR, "grow: could not resize growinging array: %m");
|
|
return false;
|
|
} else {
|
|
g -> arr = new_arr;
|
|
g -> alloc = new_size;
|
|
}
|
|
}
|
|
g -> arr[g -> elems] = val;
|
|
g -> elems++;
|
|
g -> active_elems++;
|
|
return true;
|
|
}
|
|
|
|
void *grow_pop (struct grow *g) {
|
|
if (g -> elems == 0) {
|
|
return NULL;
|
|
} else {
|
|
g -> elems--;
|
|
g -> active_elems--;
|
|
return g -> arr[g -> elems + 1];
|
|
}
|
|
}
|
|
|
|
void grow_drop (struct grow *g) {
|
|
if (g -> dealloc == true) {
|
|
for(uint64_t i = 0; i < g -> elems; i++) {
|
|
free(g->arr[i]);
|
|
}
|
|
}
|
|
free(g -> arr);
|
|
free(g);
|
|
return;
|
|
}
|