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better scaling for large servers using many session ids

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This commit is contained in:
Sascha Schumann 1999-06-07 19:51:54 +00:00
parent bc1e4a5a10
commit 4b023c157a
2 changed files with 30 additions and 4 deletions
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32
ext/session/mod_files.c
View File

@ -41,6 +41,7 @@ typedef struct {
int fd;
char *lastkey;
char *basedir;
int dirdepth;
} ps_files;
@ -54,11 +55,16 @@ ps_module ps_mod_files = {
PS_OPEN_FUNC(files)
{
ps_files *data;
char *p;
data = ecalloc(sizeof(*data), 1);
*mod_data = data;
data->fd = -1;
if((p = strchr(save_path, ':'))) {
data->dirdepth = strtol(save_path, NULL, 10);
save_path = p + 1;
}
data->basedir = estrdup(save_path);
return SUCCESS;
@ -77,17 +83,38 @@ PS_CLOSE_FUNC(files)
return SUCCESS;
}
#if WIN32|WINNT
#define DIR_DELIMITER '\\'
#else
#define DIR_DELIMITER '/'
#endif
static void _ps_files_open(ps_files *data, const char *key)
{
char buf[MAXPATHLEN];
const char *p;
int i;
int n;
int keylen;
if(data->fd < 0 || !data->lastkey || strcmp(key, data->lastkey)) {
if(data->lastkey) efree(data->lastkey);
if(data->fd > -1) close(data->fd);
keylen = strlen(key);
if(keylen <= data->dirdepth || MAXPATHLEN <
(strlen(data->basedir) + 2 * data->dirdepth + keylen + 5))
return;
p = key;
n = sprintf(buf, "%s/", data->basedir);
for(i = 0; i < data->dirdepth; i++) {
buf[n++] = *p++;
buf[n++] = DIR_DELIMITER;
}
strcat(buf, p);
data->lastkey = estrdup(key);
snprintf(buf, MAXPATHLEN, "%s/%s", data->basedir, key);
data->fd = open(buf, O_CREAT | O_RDWR, 0600);
if(data->fd > -1) {
flock(data->fd, LOCK_EX);
@ -151,5 +178,6 @@ PS_DELETE_FUNC(files)
PS_GC_FUNC(files)
{
return SUCCESS;
}

2
ext/session/session.c
View File

@ -31,9 +31,7 @@
* TODO:
* - improve session id creation to avoid collisions
* (make use of mersenne twister, other data such as IP, browser etc.)
* - improve files handler for better scaling
* - add complete support for objects (partially implemented)
* - complete ZTS support (currently only useable as non-ZTS)
* - userland callback functions for ps_module
*/
#if !(WIN32|WINNT)