Changeset e1b6742 in mainline for uspace/lib/c

Timestamp:

2010-04-18T12:17:11Z (15 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

e535eeb

Parents:

bbda5ab

Message:

export threads to user space
the "tasks" command can now print all threads or threads belonging to a task

Location:

uspace/lib/c

Files:

• generic/stats.c (modified) (3 diffs)
• include/stats.h (modified) (1 diff)

uspace/lib/c/generic/stats.c

@@ -43 +43 @@
 #define SYSINFO_STATS_MAX_PATH  64
 
+/** Thread states
+ *
+ */
+static const char *thread_states[] = {
+        "Invalid",
+        "Running",
+        "Sleeping",
+        "Ready",
+        "Entering",
+        "Exiting",
+        "Lingering"
+};
+
 /** Get CPUs statistics
  *
@@ -125 +138 @@
         
         return stats_task;
+}
+
+/** Get thread IDs
+ *
+ * @param count Number of IDs returned.
+ *
+ * @return Array of IDs (thread_id_t).
+ *         If non-NULL then it should be eventually freed
+ *         by free().
+ *
+ */
+thread_id_t *stats_get_threads(size_t *count)
+{
+        size_t size = 0;
+        thread_id_t *ids =
+            (thread_id_t *) sysinfo_get_data("system.threads", &size);
+        
+        assert((size % sizeof(thread_id_t)) == 0);
+        
+        *count = size / sizeof(thread_id_t);
+        return ids;
+}
+
+/** Get single thread statistics
+ *
+ * @param thread_id Thread ID we are interested in.
+ *
+ * @return Pointer to the stats_thread_t structure.
+ *         If non-NULL then it should be eventually freed
+ *         by free().
+ *
+ */
+stats_thread_t *stats_get_thread(thread_id_t thread_id)
+{
+        char name[SYSINFO_STATS_MAX_PATH];
+        snprintf(name, SYSINFO_STATS_MAX_PATH, "system.threads.%" PRIu64, thread_id);
+        
+        size_t size = 0;
+        stats_thread_t *stats_thread =
+            (stats_thread_t *) sysinfo_get_data(name, &size);
+        
+        assert((size == sizeof(stats_thread_t)) || (size == 0));
+        
+        return stats_thread;
 }
 
@@ -188 +245 @@
 }
 
+const char *thread_get_state(state_t state)
+{
+        if (state <= Lingering)
+                return thread_states[state];
+        
+        return thread_states[Invalid];
+}
+
 /** @}
  */

uspace/lib/c/include/stats.h

@@ -37 +37 @@
 
 #include <task.h>
+#include <thread.h>
+#include <stdint.h>
+#include <bool.h>
 #include <kernel/sysinfo/abi.h>
 
 extern stats_cpu_t *stats_get_cpus(size_t *);
 extern stats_physmem_t *stats_get_physmem(void);
-extern task_id_t *stats_get_tasks(size_t *);
-extern stats_task_t *stats_get_task(task_id_t);
 extern load_t *stats_get_load(size_t *);
 extern sysarg_t stats_get_uptime(void);
 
+extern task_id_t *stats_get_tasks(size_t *);
+extern stats_task_t *stats_get_task(task_id_t);
+
+extern thread_id_t *stats_get_threads(size_t *);
+extern stats_thread_t *stats_get_thread(thread_id_t);
+
 extern void stats_print_load_fragment(load_t, unsigned int);
+extern const char *thread_get_state(state_t);
 
 #endif