event naming

1 files changed, 117 insertions, 0 deletions

diff --git a/src/ft2csv.c b/src/ft2csv.c
new file mode 100644
index 0000000..a5fdf0a
--- /dev/null
+++ b/src/ft2csv.c
@@ -0,0 +1,117 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "mapping.h"
+
+#include "timestamp.h"
+
+static unsigned int incomplete = 0;
+
+static struct timestamp* next(struct timestamp** pos, size_t* count, int cpu)
+{
+        while (*count--)
+                if ((++(*pos))->cpu == cpu)
+                        return *pos;       
+        return NULL;
+}
+
+static struct timestamp* next_id(struct timestamp** pos, size_t* count, 
+                                 int cpu, unsigned long id) 
+{
+        struct timestamp* ret;
+        while ((ret = next(pos, count, cpu)) && (*pos)->event != id);
+        return ret;
+}
+
+static int find_pair(struct timestamp* start, 
+                     struct timestamp** end,
+                     size_t count)
+{
+        struct timestamp *pos = start;
+        /* convention: the end->event is start->event + 1 */
+        *end = next_id(&pos, &count, start->cpu, start->event + 1);
+        return *end != NULL;
+}
+
+static void show_csv(struct timestamp* ts, size_t count)
+{
+        struct timestamp* start = ts;
+        struct timestamp* stop;
+
+        if (find_pair(start, &stop, count)) {
+                printf("%llu, %llu, %llu\n",
+                       start->timestamp, stop->timestamp, 
+                       stop->timestamp - start->timestamp);
+        } else
+                incomplete++;
+        
+}
+
+/*static void show_all_per_cpu(struct timestamp* ts, size_t count)
+{
+        struct timestamp* _ts = ts;
+        size_t _count = count;
+        int cpu;
+        
+        for (cpu = 0; cpu < 4; cpu++) {
+                count = _count;
+                ts    = _ts;
+                while (count--) {
+                        if (ts->cpu == cpu)
+                                show(ts, count);        
+                        ts++;
+                }
+        }
+}*/
+
+static void show_id(struct timestamp* ts, size_t count,  unsigned long id)
+{
+        while (count--)
+                if (ts->event == id)
+                        show_csv(ts++, count);
+                else
+                        ts++;
+}
+
+
+static void dump(struct timestamp* ts, size_t count,  unsigned long id)
+{
+        while (count--)
+                printf("%lu\n", (ts++)->event);
+}
+
+
+static void die(char* msg)
+{
+        if (errno)
+                perror("error: ");
+        fprintf(stderr, "%s\n", msg);   
+        exit(1);
+}
+
+int main(int argc, char** argv) 
+{
+        void* mapped;
+        size_t size, count;
+        struct timestamp* ts;   
+        unsigned long id;
+
+        if (argc != 3)
+                die("Usage: ft2csv  <event_name>  <logfile>");
+        if (map_file(argv[2], &mapped, &size))
+                die("could not map file");
+
+        if (!str2event(argv[1], &id))
+                die("Unknown event!");
+
+        ts    = (struct timestamp*) mapped;
+        count = size / sizeof(struct timestamp);                
+
+        show_id(ts, count, id);
+
+        fprintf(stderr, "Incomplete: %d\n", incomplete);
+
+        return 0;
+}