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fix bug: two threads load a same plugin as the same time

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This commit is contained in:
Xuan Sang LE 2018-03-14 12:41:51 +01:00
parent 4679f6ab04
commit f2a2139e5b
1 changed files with 7 additions and 1 deletions
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8
http_server.c
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@ -1,4 +1,5 @@
#include "http_server.h" #include "http_server.h"
static pthread_mutex_t server_mux = PTHREAD_MUTEX_INITIALIZER;
/**********************************************************************/ /**********************************************************************/
/* A request has caused a call to accept() on the server port to /* A request has caused a call to accept() on the server port to
* return. Process the request appropriately. * return. Process the request appropriately.
@ -958,11 +959,16 @@ int execute_plugin(void* client, const char *path, const char *method, dictionar
//load the plugin //load the plugin
if((plugin = plugin_lookup(pname)) == NULL) if((plugin = plugin_lookup(pname)) == NULL)
if((plugin= plugin_load(pname)) == NULL) {
pthread_mutex_lock(&server_mux);
plugin= plugin_load(pname);
pthread_mutex_unlock(&server_mux);
if( plugin == NULL)
{ {
if(orgs) free(orgs); if(orgs) free(orgs);
return -1; return -1;
} }
}
// load the function // load the function
fn = (void (*)(void*, const char *, const char*, dictionary))dlsym(plugin->handle, PLUGIN_HANDLER); fn = (void (*)(void*, const char *, const char*, dictionary))dlsym(plugin->handle, PLUGIN_HANDLER);
if ((error = dlerror()) != NULL) if ((error = dlerror()) != NULL)