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T: use PID for the SHM name

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That allows to run several programs using this mechanism on the
same computer (say both eNB and UE, to debug).
This commit is contained in:
Cedric Roux
2018-04-24 14:53:12 +02:00
parent 7576e3fa52
commit c14dd7ffbb
2 changed files with 17 additions and 13 deletions
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common/utils/T/local_tracer.c
+7 -7
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@@ -326,17 +326,17 @@ static void wait_message(void)
while (T_local_cache[T_busylist_head].busy == 0) usleep(1000);
}
static void init_shm(void)
static void init_shm(char *shm_file)
{
int i;
int s = shm_open(T_SHM_FILENAME, O_RDWR | O_CREAT /*| O_SYNC*/, 0666);
if (s == -1) { perror(T_SHM_FILENAME); abort(); }
int s = shm_open(shm_file, O_RDWR | O_CREAT /*| O_SYNC*/, 0666);
if (s == -1) { perror(shm_file); abort(); }
if (ftruncate(s, T_CACHE_SIZE * sizeof(T_cache_t)))
{ perror(T_SHM_FILENAME); abort(); }
{ perror(shm_file); abort(); }
T_local_cache = mmap(NULL, T_CACHE_SIZE * sizeof(T_cache_t),
PROT_READ | PROT_WRITE, MAP_SHARED, s, 0);
if (T_local_cache == MAP_FAILED)
{ perror(T_SHM_FILENAME); abort(); }
{ perror(shm_file); abort(); }
close(s);
/* let's garbage the memory to catch some potential problems
@@ -347,7 +347,7 @@ static void init_shm(void)
}
void T_local_tracer_main(int remote_port, int wait_for_tracer,
int local_socket)
int local_socket, char *shm_file)
{
int s;
int port = remote_port;
@@ -357,7 +357,7 @@ void T_local_tracer_main(int remote_port, int wait_for_tracer,
/* write on a socket fails if the other end is closed and we get SIGPIPE */
if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) abort();
init_shm();
init_shm(shm_file);
s = local_socket;
if (dont_wait) {