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Serialize some data writes.

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default 2023-02-23 09:32:47 +01:00
parent 90838f07c6
commit 4eec215729
1 changed files with 16 additions and 1 deletions
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17
data.c
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@ -14,13 +14,16 @@
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/file.h> #include <sys/file.h>
#include <fcntl.h> #include <fcntl.h>
#include <pthread.h>
double disk_layout = 2.7; double disk_layout = 2.7;
/* storage serializer */
pthread_mutex_t data_mutex = {0};
int snac_upgrade(d_char **error); int snac_upgrade(d_char **error);
int srv_open(char *basedir, int auto_upgrade) int srv_open(char *basedir, int auto_upgrade)
/* opens a server */ /* opens a server */
{ {
@ -29,6 +32,8 @@ int srv_open(char *basedir, int auto_upgrade)
FILE *f; FILE *f;
d_char *error = NULL; d_char *error = NULL;
pthread_mutex_init(&data_mutex, NULL);
srv_basedir = xs_str_new(basedir); srv_basedir = xs_str_new(basedir);
if (xs_endswith(srv_basedir, "/")) if (xs_endswith(srv_basedir, "/"))
@ -121,6 +126,8 @@ void srv_free(void)
xs_free(srv_basedir); xs_free(srv_basedir);
xs_free(srv_config); xs_free(srv_config);
xs_free(srv_baseurl); xs_free(srv_baseurl);
pthread_mutex_destroy(&data_mutex);
} }
@ -250,6 +257,8 @@ int index_add_md5(const char *fn, const char *md5)
int status = 201; /* Created */ int status = 201; /* Created */
FILE *f; FILE *f;
pthread_mutex_lock(&data_mutex);
if ((f = fopen(fn, "a")) != NULL) { if ((f = fopen(fn, "a")) != NULL) {
flock(fileno(f), LOCK_EX); flock(fileno(f), LOCK_EX);
@ -262,6 +271,8 @@ int index_add_md5(const char *fn, const char *md5)
else else
status = 500; status = 500;
pthread_mutex_unlock(&data_mutex);
return status; return status;
} }
@ -280,6 +291,8 @@ int index_del_md5(const char *fn, const char *md5)
int status = 404; int status = 404;
FILE *i, *o; FILE *i, *o;
pthread_mutex_lock(&data_mutex);
if ((i = fopen(fn, "r")) != NULL) { if ((i = fopen(fn, "r")) != NULL) {
flock(fileno(i), LOCK_EX); flock(fileno(i), LOCK_EX);
@ -309,6 +322,8 @@ int index_del_md5(const char *fn, const char *md5)
else else
status = 500; status = 500;
pthread_mutex_unlock(&data_mutex);
return status; return status;
} }