Cory McWilliams
da51e87774
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3650 ed5197a5-7fde-0310-b194-c3ffbd925b24
137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/* Copyright libuv project contributors. All rights reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to
|
|
* deal in the Software without restriction, including without limitation the
|
|
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
* sell copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include "uv.h"
|
|
#include "internal.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
static uv_mutex_t process_title_mutex;
|
|
static uv_once_t process_title_mutex_once = UV_ONCE_INIT;
|
|
static char* process_title = NULL;
|
|
static void* args_mem = NULL;
|
|
|
|
|
|
static void init_process_title_mutex_once(void) {
|
|
uv_mutex_init(&process_title_mutex);
|
|
}
|
|
|
|
|
|
char** uv_setup_args(int argc, char** argv) {
|
|
char** new_argv;
|
|
size_t size;
|
|
char* s;
|
|
int i;
|
|
|
|
if (argc <= 0)
|
|
return argv;
|
|
|
|
/* Calculate how much memory we need for the argv strings. */
|
|
size = 0;
|
|
for (i = 0; i < argc; i++)
|
|
size += strlen(argv[i]) + 1;
|
|
|
|
/* Add space for the argv pointers. */
|
|
size += (argc + 1) * sizeof(char*);
|
|
|
|
new_argv = uv__malloc(size);
|
|
if (new_argv == NULL)
|
|
return argv;
|
|
|
|
/* Copy over the strings and set up the pointer table. */
|
|
s = (char*) &new_argv[argc + 1];
|
|
for (i = 0; i < argc; i++) {
|
|
size = strlen(argv[i]) + 1;
|
|
memcpy(s, argv[i], size);
|
|
new_argv[i] = s;
|
|
s += size;
|
|
}
|
|
new_argv[i] = NULL;
|
|
|
|
args_mem = new_argv;
|
|
process_title = uv__strdup(argv[0]);
|
|
|
|
return new_argv;
|
|
}
|
|
|
|
|
|
int uv_set_process_title(const char* title) {
|
|
char* new_title;
|
|
|
|
/* If uv_setup_args wasn't called or failed, we can't continue. */
|
|
if (args_mem == NULL)
|
|
return UV_ENOBUFS;
|
|
|
|
/* We cannot free this pointer when libuv shuts down,
|
|
* the process may still be using it.
|
|
*/
|
|
new_title = uv__strdup(title);
|
|
if (new_title == NULL)
|
|
return UV_ENOMEM;
|
|
|
|
uv_once(&process_title_mutex_once, init_process_title_mutex_once);
|
|
uv_mutex_lock(&process_title_mutex);
|
|
|
|
if (process_title != NULL)
|
|
uv__free(process_title);
|
|
|
|
process_title = new_title;
|
|
|
|
uv_mutex_unlock(&process_title_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int uv_get_process_title(char* buffer, size_t size) {
|
|
size_t len;
|
|
|
|
if (buffer == NULL || size == 0)
|
|
return UV_EINVAL;
|
|
|
|
/* If uv_setup_args wasn't called or failed, we can't continue. */
|
|
if (args_mem == NULL || process_title == NULL)
|
|
return UV_ENOBUFS;
|
|
|
|
uv_once(&process_title_mutex_once, init_process_title_mutex_once);
|
|
uv_mutex_lock(&process_title_mutex);
|
|
|
|
len = strlen(process_title);
|
|
|
|
if (size <= len) {
|
|
uv_mutex_unlock(&process_title_mutex);
|
|
return UV_ENOBUFS;
|
|
}
|
|
|
|
strcpy(buffer, process_title);
|
|
|
|
uv_mutex_unlock(&process_title_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void uv__process_title_cleanup(void) {
|
|
uv__free(args_mem); /* Keep valgrind happy. */
|
|
args_mem = NULL;
|
|
}
|