commit 992805a678fb84b64f201a1d4abf8b99b47d1ac8
parent efedcd4b641ea255f9d37ca0f34c27d259ac0bdd
Author: lostd <lostd@2f30.org>
Date: Thu, 14 Nov 2013 21:57:09 +0200
Remove original file
Diffstat:
| D | callgraph.c | | | 198 | ------------------------------------------------------------------------------- |
1 file changed, 0 insertions(+), 198 deletions(-)
diff --git a/callgraph.c b/callgraph.c
@@ -1,198 +0,0 @@
-/* runtime callgraph generator by stateless */
-
-#include <stdio.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include <assert.h>
-
-struct fnode_t {
- uintptr_t addr;
- struct fnode_t *next;
-};
-
-struct fpair_t {
- uintptr_t l, r; /* l is the caller, r is the callee */
- struct fpair_t *next;
-};
-
-/* essentially a stack of function calls */
-static struct fnode_t *fnode_head = NULL;
-static struct fnode_t *fnode_tail = NULL;
-
-/* a list of function pairs (caller -> callee) */
-static struct fpair_t *fpair_head = NULL;
-static struct fpair_t *fpair_tail = NULL;
-
-static int fd = -1;
-static char logbuf[BUFSIZ];
-
-static void *
-xmalloc(size_t size)
-{
- void *p;
-
- p = malloc(size);
- if (!p)
- _Exit(EXIT_FAILURE);
- return p;
-}
-
-static ssize_t
-writelog(int fildes, const void *buf, size_t nbyte)
-{
- ssize_t w, r, tmp;
-
- w = 0;
- r = nbyte;
- if (r < 0) return 0;
- do {
-again:
- tmp = write(fildes, (const char *)buf + w, r);
- if (tmp <= 0) {
- if (tmp)
- if (errno == EINTR)
- goto again;
- return tmp;
- }
- w += tmp;
- r -= tmp;
- } while (r > 0);
- return w;
-}
-
-__attribute__ ((constructor)) static void
-init_logging(void)
-{
- char *f;
-
- f = getenv("CGRAPH_OUT");
- if (!f) {
- fprintf(stderr, "cgraph: CGRAPH_OUT is not set!\n");
- _Exit(EXIT_FAILURE);
- }
-
- fd = open(f, O_WRONLY | O_CREAT, 0644);
- if (fd < 0 || ftruncate(fd, 0) < 0) {
- perror("cgraph");
- _Exit(EXIT_FAILURE);
- }
-}
-
-__attribute__ ((destructor)) static void
-deinit_logging(void)
-{
- struct fpair_t *p, *tmppair;
- struct fnode_t *n, *tmpnode;
-
- writelog(fd, "digraph G {\n",
- strlen("digraph G {\n"));
- p = fpair_head;
- while (p) {
- snprintf(logbuf, sizeof logbuf,
- "\t \"%"PRIxPTR"\" -> \"%"PRIxPTR"\"\n", p->l, p->r);
- writelog(fd, logbuf, strlen(logbuf));
- p = p->next;
- }
- writelog(fd, "}\n", 2);
-
- if (fd != -1)
- if (close(fd) < 0)
- perror("cgraph");
-
- p = fpair_head;
- while (p) {
- tmppair = p->next;
- free(p);
- p = tmppair;
- }
- n = fnode_head;
- while (n) {
- tmpnode = n->next;
- free(n);
- n = tmpnode;
- }
-}
-
-static void
-push_fnode(uintptr_t addr)
-{
- if (!fnode_head) {
- fnode_head = xmalloc(sizeof(struct fnode_t));
- fnode_head->addr = addr;
- fnode_head->next = NULL;
- fnode_tail = fnode_head;
- } else {
- fnode_tail->next = xmalloc(sizeof(struct fnode_t));
- fnode_tail = fnode_tail->next;
- fnode_tail->next = NULL;
- fnode_tail->addr = addr;
- }
-}
-
-static void
-pop_fnode(void)
-{
- struct fnode_t *i;
-
- assert(fnode_tail);
- for (i = fnode_head; i; i = i->next)
- if (i->next == fnode_tail)
- break;
- if (!i) return;
- free(fnode_tail);
- fnode_tail = i;
- fnode_tail->next = NULL;
-}
-
-static inline struct fnode_t *
-get_top(void) {
- return fnode_tail;
-}
-
-static void
-add_fpair(uintptr_t r)
-{
- struct fnode_t *curfun;
-
- curfun = get_top();
- if (!fpair_head) {
- fpair_head = xmalloc(sizeof(struct fpair_t));
- fpair_head->l = curfun->addr;
- fpair_head->r = r;
- fpair_head->next = NULL;
- fpair_tail = fpair_head;
- } else {
- fpair_tail->next = xmalloc(sizeof(struct fpair_t));
- fpair_tail = fpair_tail->next;
- fpair_tail->l = curfun->addr;
- fpair_tail->r = r;
- fpair_tail->next = NULL;
- }
-}
-
-void
-__cyg_profile_func_enter(void *func_address,
- __attribute__ ((unused)) void *call_site)
-{
- struct fnode_t *n;
-
- n = get_top();
- if (n)
- add_fpair((uintptr_t)func_address);
- push_fnode((uintptr_t)func_address);
-}
-
-void
-__cyg_profile_func_exit (
- __attribute__ ((unused)) void *func_address,
- __attribute__ ((unused)) void *call_site)
-{
- pop_fnode();
-}
-
