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switching to pthread with shared process attribute as sem_init doesnt work for blackfin

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maliakal_d 2020-10-07 12:25:14 +02:00
parent 3b619f4488
commit 51bfa17c6a
1 changed files with 50 additions and 19 deletions
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63
slsDetectorServers/slsDetectorServer/src/sharedMemory.c
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@ -2,26 +2,22 @@
#include "clogger.h"
#include <errno.h>
#include <semaphore.h>
#include <pthread.h>
#include <string.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <unistd.h>
#define SHM_NAME "sls_server_shared_memory"
#ifdef EIGERD
#define SHM_VERSION 0x200915
#else
#define SHM_VERSION 0x200625
#endif
#define SHM_VERSION 0x201007
#define SHM_KEY 5678
#define MEM_SIZE 128
typedef struct Memory {
int version;
sem_t semStatus;
pthread_mutex_t lockStatus;
#ifdef EIGERD
sem_t semLocalLink;
pthread_mutex_t lockLocalLink;
#endif
enum runStatus scanStatus; // idle, running or error
int scanStop;
@ -87,14 +83,47 @@ int sharedMemory_create(int port) {
int sharedMemory_initialize() {
shm->version = SHM_VERSION;
if (sem_init(&(shm->semStatus), 1, 1) != 0) {
LOG(logERROR, ("Failed to initialize semaphore semStatus for "
pthread_mutexattr_t lockStatusAttribute;
if (pthread_mutexattr_init(&lockStatusAttribute) != 0) {
LOG(logERROR,
("Failed to initialize mutex attribute for lockStatus for "
"shared memory\n"));
return FAIL;
}
if (pthread_mutexattr_setpshared(&lockStatusAttribute,
PTHREAD_PROCESS_SHARED) != 0) {
LOG(logERROR, ("Failed to set attribute property to process shared for "
"lockStatus for shared memory\n"));
return FAIL;
}
if (pthread_mutex_init(&(shm->lockStatus), &lockStatusAttribute) != 0) {
LOG(logERROR, ("Failed to initialize pthread_mutex_t lockStatus for "
"shared memory\n"));
return FAIL;
}
#ifdef EIGERD
if (sem_init(&(shm->semLocalLink), 1, 1) != 0) {
LOG(logERROR, ("Failed to initialize semaphore semLocalLink for "
pthread_mutexattr_t lockLocalLinkAttribute;
if (pthread_mutexattr_init(&lockLocalLinkAttribute) != 0) {
LOG(logERROR,
("Failed to initialize mutex attribute for lockLocalLink for "
"shared memory\n"));
return FAIL;
}
if (pthread_mutexattr_setpshared(&lockLocalLinkAttribute,
PTHREAD_PROCESS_SHARED) != 0) {
LOG(logERROR, ("Failed to set attribute property to process shared for "
"lockLocalLink for shared memory\n"));
return FAIL;
}
if (pthread_mutex_init(&(shm->lockLocalLink), &lockLocalLinkAttribute) !=
0) {
LOG(logERROR, ("Failed to initialize pthread_mutex_t lockLocalLink for "
"shared memory\n"));
return FAIL;
}
@ -155,9 +184,9 @@ int sharedMemory_remove() {
return OK;
}
void sharedMemory_lockStatus() { sem_wait(&(shm->semStatus)); }
void sharedMemory_lockStatus() { pthread_mutex_lock(&(shm->lockStatus)); }
void sharedMemory_unlockStatus() { sem_post(&(shm->semStatus)); }
void sharedMemory_unlockStatus() { pthread_mutex_unlock(&(shm->lockStatus)); }
#ifdef VIRTUAL
void sharedMemory_setStatus(enum runStatus s) {
@ -218,7 +247,9 @@ int sharedMemory_getScanStop() {
}
#ifdef EIGERD
void sharedMemory_lockLocalLink() { sem_wait(&(shm->semLocalLink)); }
void sharedMemory_lockLocalLink() { pthread_mutex_lock(&(shm->lockLocalLink)); }
void sharedMemory_unlockLocalLink() { sem_post(&(shm->semLocalLink)); }
void sharedMemory_unlockLocalLink() {
pthread_mutex_unlock(&(shm->lockLocalLink));
}
#endif