[sysprof] Don't compile process.[ch] anymore

[Søren Sandmann Pedersen <ssp src gnome org>]

commit b8364e28476e7c55f032b71b943ac2049e1ed36b
Author: Søren Sandmann Pedersen <ssp redhat com>
Date:   Mon Sep 7 23:33:48 2009 -0400

    Don't compile process.[ch] anymore

 Makefile.am |    2 -
 TODO        |    6 ++
 binfile.c   |  153 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 collector.c |   31 ++++++++---
 process.c   |  163 -----------------------------------------------------------
 tracker.c   |    9 +--
 6 files changed, 182 insertions(+), 182 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 4003df3..89f4341 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -17,8 +17,6 @@ SYSPROF_CORE =					\
 	demangle.c				\
 	elfparser.c				\
 	elfparser.h				\
-	process.h				\
-	process.c				\
 	profile.h				\
 	profile.c				\
 	sfile.h					\
diff --git a/TODO b/TODO
index 11a4ab4..8a5c6be 100644
--- a/TODO
+++ b/TODO
@@ -23,6 +23,12 @@ Before 1.0.4:
 
 Before 1.2:
 
+* Get rid of remaining gulongs (use uint64_t instead)
+
+* Move binfile hash table to state_t.
+
+* Get rid of process.c
+
 * On 32 bit, NMI stackframes are not filtered out which leads to 
   wrong kernel traces
 
diff --git a/binfile.c b/binfile.c
index 5040741..510e216 100644
--- a/binfile.c
+++ b/binfile.c
@@ -36,7 +36,6 @@
 
 #include "binfile.h"
 #include "elfparser.h"
-#include "process.h"
 
 struct BinFile
 {
@@ -258,8 +257,158 @@ get_debug_binaries (GList      *files,
     return files;
 }
 
+
 static GHashTable *bin_files;
 
+typedef struct Map Map;
+struct Map
+{
+    char *	filename;
+    gulong	start;
+    gulong	end;
+    gulong      offset;
+    gulong	inode;
+    
+    BinFile *	bin_file;
+};
+
+static Map *
+read_maps (int pid, int *n_maps)
+{
+    char *name = g_strdup_printf ("/proc/%d/maps", pid);
+    char buffer[1024];
+    FILE *in;
+    GArray *result;
+
+    in = fopen (name, "r");
+    if (!in)
+    {
+	g_free (name);
+	return NULL;
+    }
+
+    result = g_array_new (FALSE, FALSE, sizeof (Map));
+    
+    while (fgets (buffer, sizeof (buffer) - 1, in))
+    {
+	char file[256];
+	int count;
+	gulong start;
+	gulong end;
+	gulong offset;
+	gulong inode;
+	
+	count = sscanf (
+	    buffer, "%lx-%lx %*15s %lx %*x:%*x %lu %255s", 
+	    &start, &end, &offset, &inode, file);
+
+	if (count == 5)
+	{
+	    Map map;
+	    
+	    map.filename = g_strdup (file);
+	    map.start = start;
+	    map.end = end;
+	    
+	    if (strcmp (map.filename, "[vdso]") == 0)
+	    {
+		/* For the vdso, the kernel reports 'offset' as the
+		 * the same as the mapping addres. This doesn't make
+		 * any sense to me, so we just zero it here. There
+		 * is code in binfile.c (read_inode) that returns 0
+		 * for [vdso].
+		 */
+		map.offset = 0;
+		map.inode = 0;
+	    }
+	    else
+	    {
+		map.offset = offset;
+		map.inode = inode;
+	    }
+
+	    map.bin_file = NULL;
+
+	    g_array_append_val (result, map);
+	}
+    }
+
+    g_free (name);
+    fclose (in);
+
+    if (n_maps)
+	*n_maps = result->len;
+
+    return (Map *)g_array_free (result, FALSE);
+}
+
+static void
+free_maps (int *n_maps,
+	   Map *maps)
+{
+    int i;
+
+    for (i = 0; i < *n_maps; ++i)
+    {
+	Map *map = &(maps[i]);
+	
+	if (map->filename)
+	    g_free (map->filename);
+	
+	if (map->bin_file)
+	    bin_file_free (map->bin_file);
+    }
+
+    g_free (maps);
+    *n_maps = 0;
+}
+
+const guint8 *
+get_vdso_bytes (gsize *length)
+{
+    static gboolean has_data;
+    static const guint8 *bytes = NULL;
+    static gsize n_bytes = 0;    
+
+    if (!has_data)
+    {
+	Map *maps;
+	int n_maps, i;
+
+	maps = read_maps (getpid(), &n_maps);
+
+	for (i = 0; i < n_maps; ++i)
+	{
+	    Map *map = &(maps[i]);
+
+	    if (strcmp (map->filename, "[vdso]") == 0)
+	    {
+		n_bytes = map->end - map->start;
+
+		/* Dup the memory here so that valgrind will only
+		 * report one 1 byte invalid read instead of
+		 * a ton when the elf parser scans the vdso
+		 *
+		 * The reason we get a spurious invalid read from
+		 * valgrind is that we are getting the address directly
+		 * from /proc/maps, and valgrind knows that its mmap()
+		 * wrapper never returned that address. But since it
+		 * is a legal mapping, it is legal to read it.
+		 */
+		bytes = g_memdup ((guint8 *)map->start, n_bytes);
+	    }
+	}
+	
+	has_data = TRUE;
+	free_maps (&n_maps, maps);
+    }
+
+    if (length)
+	*length = n_bytes;
+
+    return bytes;
+}
+
 BinFile *
 bin_file_new (const char *filename)
 {
@@ -294,7 +443,7 @@ bin_file_new (const char *filename)
 	    const guint8 *vdso_bytes;
 	    gsize length;
 
-	    vdso_bytes = process_get_vdso_bytes (&length);
+	    vdso_bytes = get_vdso_bytes (&length);
 
 	    if (vdso_bytes)
 		elf = elf_parser_new_from_data (vdso_bytes, length);
diff --git a/collector.c b/collector.c
index e7ba682..561211b 100644
--- a/collector.c
+++ b/collector.c
@@ -165,11 +165,26 @@ in_dead_period (Collector *collector)
     return FALSE;
 }
 
+static int
+get_page_size (void)
+{
+    static int page_size;
+    static gboolean has_page_size = FALSE;
+
+    if (!has_page_size)
+    {
+	page_size = getpagesize();
+	has_page_size = TRUE;
+    }
+
+    return page_size;
+}
+
 static void
 on_read (gpointer data)
 {
     counter_t *counter = data;
-    int mask = (N_PAGES * process_get_page_size() - 1);
+    int mask = (N_PAGES * get_page_size() - 1);
     gboolean skip_samples;
     Collector *collector;
     uint64_t head, tail;
@@ -245,27 +260,27 @@ on_read (gpointer data)
 static void *
 map_buffer (counter_t *counter)
 { 
-    int n_bytes = N_PAGES * process_get_page_size();
+    int n_bytes = N_PAGES * get_page_size();
     void *address, *a;
 
     /* We use the old trick of mapping the ring buffer twice
      * consecutively, so that we don't need special-case code
      * to deal with wrapping.
      */
-    address = mmap (NULL, n_bytes * 2 + process_get_page_size(), PROT_NONE,
+    address = mmap (NULL, n_bytes * 2 + get_page_size(), PROT_NONE,
 		    MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
 
     if (address == MAP_FAILED)
 	fail ("mmap");
 
-    a = mmap (address + n_bytes, n_bytes + process_get_page_size(),
+    a = mmap (address + n_bytes, n_bytes + get_page_size(),
 	      PROT_READ | PROT_WRITE,
 	      MAP_SHARED | MAP_FIXED, counter->fd, 0);
     
     if (a != address + n_bytes)
 	fail ("mmap");
 
-    a = mmap (address, n_bytes + process_get_page_size(),
+    a = mmap (address, n_bytes + get_page_size(),
 	      PROT_READ | PROT_WRITE,
 	      MAP_SHARED | MAP_FIXED, counter->fd, 0);
 
@@ -320,7 +335,7 @@ counter_new (Collector *collector,
 	return NULL;
     }
     
-    counter->data = (uint8_t *)counter->mmap_page + process_get_page_size ();
+    counter->data = (uint8_t *)counter->mmap_page + get_page_size ();
     counter->tail = 0;
     counter->cpu = cpu;
     counter->partial = g_string_new (NULL);
@@ -340,7 +355,7 @@ counter_enable (counter_t *counter)
 static void
 counter_free (counter_t *counter)
 {
-    munmap (counter->mmap_page, (N_PAGES + 1) * process_get_page_size());
+    munmap (counter->mmap_page, (N_PAGES + 1) * get_page_size());
     fd_remove_watch (counter->fd);
     
     close (counter->fd);
@@ -375,8 +390,6 @@ collector_reset (Collector *collector)
 	collector->tracker = NULL;
     }
 
-    process_flush_caches();
-    
     collector->n_samples = 0;
     
     g_get_current_time (&collector->latest_reset);
diff --git a/process.c b/process.c
index 764e756..bf6991a 100644
--- a/process.c
+++ b/process.c
@@ -35,18 +35,6 @@
 
 static GHashTable *processes_by_pid;
 
-typedef struct Map Map;
-struct Map
-{
-    char *	filename;
-    gulong	start;
-    gulong	end;
-    gulong      offset;
-    gulong	inode;
-    
-    BinFile *	bin_file;
-};
-
 struct Process
 {
     char *	cmdline;
@@ -68,142 +56,6 @@ initialize (void)
 	processes_by_pid = g_hash_table_new (g_direct_hash, g_direct_equal);
 }
 
-static Map *
-read_maps (int pid, int *n_maps)
-{
-    char *name = g_strdup_printf ("/proc/%d/maps", pid);
-    char buffer[1024];
-    FILE *in;
-    GArray *result;
-
-    in = fopen (name, "r");
-    if (!in)
-    {
-	g_free (name);
-	return NULL;
-    }
-
-    result = g_array_new (FALSE, FALSE, sizeof (Map));
-    
-    while (fgets (buffer, sizeof (buffer) - 1, in))
-    {
-	char file[256];
-	int count;
-	gulong start;
-	gulong end;
-	gulong offset;
-	gulong inode;
-	
-	count = sscanf (
-	    buffer, "%lx-%lx %*15s %lx %*x:%*x %lu %255s", 
-	    &start, &end, &offset, &inode, file);
-	if (count == 5)
-	{
-	    Map map;
-	    
-	    map.filename = g_strdup (file);
-	    map.start = start;
-	    map.end = end;
-	    
-	    if (strcmp (map.filename, "[vdso]") == 0)
-	    {
-		/* For the vdso, the kernel reports 'offset' as the
-		 * the same as the mapping addres. This doesn't make
-		 * any sense to me, so we just zero it here. There
-		 * is code in binfile.c (read_inode) that returns 0
-		 * for [vdso].
-		 */
-		map.offset = 0;
-		map.inode = 0;
-	    }
-	    else
-	    {
-		map.offset = offset;
-		map.inode = inode;
-	    }
-
-	    map.bin_file = NULL;
-
-	    g_array_append_val (result, map);
-	}
-    }
-
-    g_free (name);
-    fclose (in);
-
-    if (n_maps)
-	*n_maps = result->len;
-
-    return (Map *)g_array_free (result, FALSE);
-}
-
-static void
-free_maps (int *n_maps,
-	   Map *maps)
-{
-    int i;
-
-    for (i = 0; i < *n_maps; ++i)
-    {
-	Map *map = &(maps[i]);
-	
-	if (map->filename)
-	    g_free (map->filename);
-	
-	if (map->bin_file)
-	    bin_file_free (map->bin_file);
-    }
-
-    g_free (maps);
-    *n_maps = 0;
-}
-
-const guint8 *
-process_get_vdso_bytes (gsize *length)
-{
-    static gboolean has_data;
-    static const guint8 *bytes = NULL;
-    static gsize n_bytes = 0;    
-
-    if (!has_data)
-    {
-	Map *maps;
-	int n_maps, i;
-
-	maps = read_maps (getpid(), &n_maps);
-
-	for (i = 0; i < n_maps; ++i)
-	{
-	    Map *map = &(maps[i]);
-
-	    if (strcmp (map->filename, "[vdso]") == 0)
-	    {
-		n_bytes = map->end - map->start;
-
-		/* Dup the memory here so that valgrind will only
-		 * report one 1 byte invalid read instead of
-		 * a ton when the elf parser scans the vdso
-		 *
-		 * The reason we get a spurious invalid read from
-		 * valgrind is that we are getting the address directly
-		 * from /proc/maps, and valgrind knows that its mmap()
-		 * wrapper never returned that address. But since it
-		 * is a legal mapping, it is legal to read it.
-		 */
-		bytes = g_memdup ((guint8 *)map->start, n_bytes);
-	    }
-	}
-	
-	has_data = TRUE;
-	free_maps (&n_maps, maps);
-    }
-
-    if (length)
-	*length = n_bytes;
-
-    return bytes;
-}
-
 static Process *
 create_process (const char *cmdline, int pid)
 {
@@ -296,21 +148,6 @@ process_has_page (Process *process, gulong addr)
 	return FALSE;
 }
 
-int
-process_get_page_size (void)
-{
-    static int page_size;
-    static gboolean has_page_size = FALSE;
-
-    if (!has_page_size)
-    {
-	page_size = getpagesize();
-	has_page_size = TRUE;
-    }
-
-    return page_size;
-}
-
 void
 process_ensure_map (Process *process, int pid, gulong addr)
 {
diff --git a/tracker.c b/tracker.c
index 05fde6c..639774c 100644
--- a/tracker.c
+++ b/tracker.c
@@ -91,6 +91,7 @@ fake_new_process (tracker_t *tracker, pid_t pid)
             {
 		tracker_add_process (
 		    tracker, pid, g_strstrip (strchr (lines[i], ':') + 1));
+		
                 break;
             }
         }
@@ -314,7 +315,6 @@ struct process_t
     pid_t       pid;
     
     char *      comm;
-    char *      undefined;
     
     GPtrArray *	maps;
 };
@@ -389,7 +389,6 @@ destroy_process (process_t *process)
     int i;
     
     g_free (process->comm);
-    g_free (process->undefined);
     
     for (i = 0; i < process->maps->len; ++i)
     {
@@ -409,7 +408,6 @@ create_process (state_t *state, new_process_t *new_process)
     
     process->pid = new_process->pid;
     process->comm = g_strdup (new_process->command_line);
-    process->undefined = NULL;
     process->maps = g_ptr_array_new ();
     
     g_hash_table_insert (
@@ -441,13 +439,12 @@ state_new (void)
 
 typedef struct
 {
-    gulong	 address;
+    gulong  	 address;
     char	*name;
 } kernel_symbol_t;
 
 static void
-parse_kallsym_line (const char *line,
-		    GArray *table)
+parse_kallsym_line (const char *line, GArray *table)
 {
     char **tokens = g_strsplit_set (line, " \t", -1);