diff options
Diffstat (limited to 'gdb/nat')
| -rw-r--r-- | gdb/nat/linux-procfs.c | 42 | ||||
| -rw-r--r-- | gdb/nat/linux-procfs.h | 7 |
2 files changed, 49 insertions, 0 deletions
diff --git a/gdb/nat/linux-procfs.c b/gdb/nat/linux-procfs.c index 24bcb01..78cbb03 100644 --- a/gdb/nat/linux-procfs.c +++ b/gdb/nat/linux-procfs.c @@ -187,6 +187,48 @@ linux_proc_pid_is_zombie (pid_t pid) /* See linux-procfs.h. */ +const char * +linux_proc_tid_get_name (ptid_t ptid) +{ +#define TASK_COMM_LEN 16 /* As defined in the kernel's sched.h. */ + + static char comm_buf[TASK_COMM_LEN]; + char comm_path[100]; + FILE *comm_file; + const char *comm_val; + pid_t pid = ptid_get_pid (ptid); + pid_t tid = ptid_lwp_p (ptid) ? ptid_get_lwp (ptid) : ptid_get_pid (ptid); + + xsnprintf (comm_path, sizeof (comm_path), + "/proc/%ld/task/%ld/comm", (long) pid, (long) tid); + + comm_file = gdb_fopen_cloexec (comm_path, "r"); + if (comm_file == NULL) + return NULL; + + comm_val = fgets (comm_buf, sizeof (comm_buf), comm_file); + fclose (comm_file); + + if (comm_val != NULL) + { + int i; + + /* Make sure there is no newline at the end. */ + for (i = 0; i < sizeof (comm_buf); i++) + { + if (comm_buf[i] == '\n') + { + comm_buf[i] = '\0'; + break; + } + } + } + + return comm_val; +} + +/* See linux-procfs.h. */ + void linux_proc_attach_tgid_threads (pid_t pid, linux_proc_attach_lwp_func attach_lwp) diff --git a/gdb/nat/linux-procfs.h b/gdb/nat/linux-procfs.h index f9cad39..f28c1ba 100644 --- a/gdb/nat/linux-procfs.h +++ b/gdb/nat/linux-procfs.h @@ -54,6 +54,13 @@ extern int linux_proc_pid_is_zombie_nowarn (pid_t pid); extern int linux_proc_pid_is_gone (pid_t pid); +/* Return a string giving the thread's name or NULL if the + information is unavailable. The returned value points to a statically + allocated buffer. The value therefore becomes invalid at the next + linux_proc_tid_get_name call. */ + +extern const char *linux_proc_tid_get_name (ptid_t ptid); + /* Callback function for linux_proc_attach_tgid_threads. If the PTID thread is not yet known, try to attach to it and return true, otherwise return false. */ |