Added next_token(). Changed skip_token(), i hope it won't break any bad

* glibtop_server.h: Added next_token(). Changed skip_token(),
        i hope it won't break any bad code.
        * procstate.c: (glibtop_get_proc_state_s): Used next_token.
        * proctime.c: (glibtop_get_proc_time_s): Implemented .start_time
        the way it ought to be. Clean ups.

sysdeps/linux/ChangeLog

@@ -1,3 +1,11 @@
+2004-08-03  Benoît Dejean  <tazforever@dlfp.org>
+
+	* glibtop_server.h: Added next_token(). Changed skip_token(),
+	i hope it won't break any bad code.
+	* procstate.c: (glibtop_get_proc_state_s): Used next_token.
+	* proctime.c: (glibtop_get_proc_time_s): Implemented .start_time
+	the way it ought to be. Clean ups
+
 2004-07-22  Benoît Dejean  <tazforever@dlfp.org>
 
 	* netload.c: (glibtop_get_netload_s): Fixed leak.

sysdeps/linux/glibtop_server.h

@@ -41,12 +41,19 @@ G_BEGIN_DECLS
 
 unsigned get_pageshift();
 
+static inline char*
+next_token(const char *p)
+{
+	while (isspace(*p)) p++;
+	return (char*) p;
+}
 
 static inline char *
 skip_token (const char *p)
 {
-	while (isspace(*p)) p++;
+	p = next_token(p);
 	while (*p && !isspace(*p)) p++;
+	p = next_token(p);
 	return (char *)p;
 }
 

sysdeps/linux/procstate.c

@@ -72,16 +72,15 @@ glibtop_get_proc_state_s (glibtop *server, glibtop_proc_state *buf, pid_t pid)
 
 	buf->flags = _glibtop_sysdeps_proc_state_uid;
 
-	sprintf (buffer, "/proc/%d", pid);
-
 	/* Now we read the remaining fields. */
 
 	if (proc_stat_to_buffer (buffer, pid))
 		return;
 
-	p = strrchr (buffer, ')'); *p = '\0';
+	p = proc_stat_after_cmd(buffer);
+	p = next_token(p);
 
-	switch(p[2])
+	switch(*p)
 	  {
 	  case 'R':
 	    buf->state = GLIBTOP_PROCESS_RUNNING;
@@ -112,7 +111,7 @@ glibtop_get_proc_state_s (glibtop *server, glibtop_proc_state *buf, pid_t pid)
 	    break;
 	  }
 
-	p = skip_token (buffer); p++;	/* pid */
+	p = skip_token (buffer); /* pid */
 	if (G_UNLIKELY(*p++ != '('))
 		glibtop_error_r (server, "Bad data in /proc/%d/stat", pid);
 

sysdeps/linux/proctime.c

@@ -24,6 +24,7 @@
 #include <glibtop.h>
 #include <glibtop/error.h>
 #include <glibtop/proctime.h>
+#include <glibtop/uptime.h>
 
 static const unsigned long _glibtop_sysdeps_proc_time =
 (1L << GLIBTOP_PROC_TIME_UTIME) + (1L << GLIBTOP_PROC_TIME_CUTIME) +
@@ -65,6 +66,7 @@ glibtop_get_proc_time_s (glibtop *server, glibtop_proc_time *buf, pid_t pid)
 
 	p = skip_multiple_token (p, 11);
 
+	/* clock_t  (1/100 s) */
 	buf->utime  = strtoull (p, &p, 0);
 	buf->stime  = strtoull (p, &p, 0);
 	buf->cutime = strtoull (p, &p, 0);
@@ -76,7 +78,36 @@ glibtop_get_proc_time_s (glibtop *server, glibtop_proc_time *buf, pid_t pid)
 	// lets skip it (using previous skip_multiple_token)
 	// buf->timeout       = strtoull (p, &p, 0);
 	buf->it_real_value = strtoull (p, &p, 0);
-	buf->start_time    = strtoull (p, &p, 0);
+
+	/* seconds since epoch */
+	{
+	  /* Linux provides start_time as clock_t representing
+	     the start of <pid> after boot_time.
+	     Let's use glibtop_get_uptime to get boot_time.
+	     But i'm not sure if this is safe
+
+	     See libgtop documentation.
+
+	     #ifdef __KERNEL__
+	     ...
+	     *
+	     * Have the 32 bit jiffies value wrap 5 minutes after boot
+	     * so jiffies wrap bugs show up earlier.
+	     *
+	     #define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))
+	     ...
+	     #endif
+
+	     start_time may be incremented by INITIAL_JIFFIES, so start_time
+	     may be not be exact. You may also get wrong start_time if your
+	     system clock is not synchronised with you hardware clock.
+	     'man hwclock'
+	  */
+	  glibtop_uptime up;
+	  glibtop_get_uptime_s(server, &up);
+
+	  buf->start_time = up.boot_time + strtoull (p, &p, 0) / 100;
+	}
 
 	buf->frequency = 100;