-#include "io.h"
+#include "imager.h"
+#include "imageri.h"
#include <stdlib.h>
#ifndef _MSC_VER
#include <unistd.h>
static int malloc_need_init = 1;
typedef struct {
- void* point;
+ void* ptr;
size_t size;
- char comm[MAXDESC];
+ const char *file;
+ int line;
} malloc_entry;
malloc_entry malloc_pointers[MAXMAL];
-/*
-#define mymalloc(x) (mymalloc_file_line(x,__FILE__,__LINE__))
-*/
+
+/* Utility functions */
+
+
+static
void
-malloc_state() {
- int i, total;
- total=0;
- mm_log((0,"malloc_state()\n"));
- bndcheck_all();
- for(i=0;i<MAXMAL;i++) if (malloc_pointers[i].point!=NULL) {
- mm_log((0,"%d: %d (0x%x) : %s\n",i,malloc_pointers[i].size,malloc_pointers[i].point,malloc_pointers[i].comm));
- total+=malloc_pointers[i].size;
- }
- if (total==0 ) mm_log((0,"No memory currently used!\n"))
- else mm_log((0,"total: %d\n",total));
+malloc_init(void) {
+ int i;
+ for(i=0; i<MAXMAL; i++) malloc_pointers[i].ptr = NULL;
+ malloc_need_init = 0;
+ atexit(malloc_state);
}
-void*
-mymalloc_file_line(int size, char* file, int line) {
- char *buf;
+static
+int
+find_ptr(void *p) {
int i;
- if (malloc_need_init) {
- for(i=0; i<MAXMAL; i++) malloc_pointers[i].point = NULL;
- malloc_need_init = 0;
- atexit(malloc_state);
- }
+ for(i=0;i<MAXMAL;i++)
+ if (malloc_pointers[i].ptr == p)
+ return i;
+ return -1;
+}
- /* bndcheck_all(); ACTIVATE FOR LOTS OF THRASHING */
- if ( (buf = malloc(size+UNDRRNVAL+OVERRNVAL)) == NULL ) { mm_log((1,"Unable to allocate %i for %s (%i)\n", size, file, line)); exit(3); }
+/* Takes a pointer to real start of array,
+ * sets the entries in the table, returns
+ * the offset corrected pointer */
+
+static
+void *
+set_entry(int i, char *buf, size_t size, char *file, int line) {
memset( buf, PADBYTE, UNDRRNVAL );
memset( &buf[UNDRRNVAL+size], PADBYTE, OVERRNVAL );
+ buf += UNDRRNVAL;
+ malloc_pointers[i].ptr = buf;
+ malloc_pointers[i].size = size;
+ malloc_pointers[i].file = file;
+ malloc_pointers[i].line = line;
+ return buf;
+}
- mm_log((1,"mymalloc_file_line: real address %p\n", buf));
- buf += UNDRRNVAL; /* Do this now so we will see the returned address in the logs. */
-
- for(i=0;i<MAXMAL;i++) if (malloc_pointers[i].point == NULL) {
- malloc_pointers[i].size = size;
- sprintf(malloc_pointers[i].comm,"%s (%d)", file, line);
- malloc_pointers[i].point = buf;
- mm_log((1,"mymalloc_file_line: slot <%d> %d bytes allocated at %p for %s (%d)\n", i, size, buf, file, line));
- return buf;
+void
+malloc_state(void) {
+ int i;
+ size_t total = 0;
+
+ i_clear_error();
+ mm_log((0,"malloc_state()\n"));
+ bndcheck_all();
+ for(i=0; i<MAXMAL; i++) if (malloc_pointers[i].ptr != NULL) {
+ mm_log((0,"%d: %lu (%p) : %s (%d)\n", i, (unsigned long)malloc_pointers[i].size, malloc_pointers[i].ptr, malloc_pointers[i].file, malloc_pointers[i].line));
+ total += malloc_pointers[i].size;
}
-
- mm_log((0,"more than %d segments allocated at %s (%d)\n", MAXMAL, file, line));
- exit(255);
- return NULL;
+ if (total == 0) mm_log((0,"No memory currently used!\n"))
+ else mm_log((0,"total: %lu\n", (unsigned long)total));
}
+void*
+mymalloc_file_line(size_t size, char* file, int line) {
+ char *buf;
+ int i;
+ if (malloc_need_init) malloc_init();
+
+ /* bndcheck_all(); Uncomment for LOTS OF THRASHING */
+
+ if ( (i = find_ptr(NULL)) < 0 ) {
+ mm_log((0,"more than %d segments allocated at %s (%d)\n", MAXMAL, file, line));
+ exit(3);
+ }
-/* This function not maintained for now */
+ if ( (buf = malloc(size+UNDRRNVAL+OVERRNVAL)) == NULL ) {
+ mm_log((1,"Unable to allocate %ld for %s (%i)\n", (long)size, file, line));
+ exit(3);
+ }
+
+ buf = set_entry(i, buf, size, file, line);
+ mm_log((1,"mymalloc_file_line: slot <%d> %ld bytes allocated at %p for %s (%d)\n", i, (long)size, buf, file, line));
+ return buf;
+}
+
+void *
+(mymalloc)(size_t size) {
+ return mymalloc_file_line(size, "unknown", 0);
+}
-/*
void*
-mymalloc_comm(int size,char *comm) {
- void *buf;
+myrealloc_file_line(void *ptr, size_t newsize, char* file, int line) {
+ char *buf;
int i;
- if (malloc_need_init) {
- for(i=0;i<MAXMAL;i++) malloc_pointers[i].point=NULL;
- malloc_need_init=0;
+
+ if (malloc_need_init) malloc_init();
+ /* bndcheck_all(); ACTIVATE FOR LOTS OF THRASHING */
+
+ if (!ptr) {
+ mm_log((1, "realloc called with ptr = NULL, sending request to malloc\n"));
+ return mymalloc_file_line(newsize, file, line);
}
- if ((buf=malloc(size))==NULL) { mm_log((1,"Unable to malloc.\n")); exit(3); }
+ if (!newsize) {
+ mm_log((1, "newsize = 0, sending request to free\n"));
+ myfree_file_line(ptr, file, line);
+ return NULL;
+ }
- for(i=0;i<MAXMAL;i++) if (malloc_pointers[i].point==NULL) {
- malloc_pointers[i].point=buf;
- malloc_pointers[i].size=size;
- strncpy(malloc_pointers[i].comm,comm,MAXDESC-1);
- return buf;
+ if ( (i = find_ptr(ptr)) == -1) {
+ mm_log((0, "Unable to find %p in realloc for %s (%i)\n", ptr, file, line));
+ exit(3);
+ }
+
+ if ( (buf = realloc(((char *)ptr)-UNDRRNVAL, UNDRRNVAL+OVERRNVAL+newsize)) == NULL ) {
+ mm_log((1,"Unable to reallocate %ld bytes at %p for %s (%i)\n", (long)
+ newsize, ptr, file, line));
+ exit(3);
}
- mm_log((0,"more than %d segments malloced\n",MAXMAL));
- exit(255);
- return NULL;
+
+ buf = set_entry(i, buf, newsize, file, line);
+ mm_log((1,"realloc_file_line: slot <%d> %ld bytes allocated at %p for %s (%d)\n", i, (long)newsize, buf, file, line));
+ return buf;
+}
+
+void *
+(myrealloc)(void *ptr, size_t newsize) {
+ return myrealloc_file_line(ptr, newsize, "unknown", 0);
}
-*/
static
void
bndcheck(int idx) {
int i;
size_t s = malloc_pointers[idx].size;
- unsigned char *pp = malloc_pointers[idx].point;
+ unsigned char *pp = malloc_pointers[idx].ptr;
if (!pp) {
mm_log((1, "bndcheck: No pointer in slot %d\n", idx));
return;
}
- for(i=0;i<UNDRRNVAL;i++)
+ for(i=0;i<UNDRRNVAL;i++) {
if (pp[-(1+i)] != PADBYTE)
- mm_log((1,"bndcheck: UNDERRUN OF %d bytes detected: slot = %d, point = %p, size = %d\n", i+1, idx, pp, s ));
+ mm_log((1,"bndcheck: UNDERRUN OF %d bytes detected: slot = %d, point = %p, size = %ld\n", i+1, idx, pp, (long)s ));
+ }
- for(i=0;i<OVERRNVAL;i++)
+ for(i=0;i<OVERRNVAL;i++) {
if (pp[s+i] != PADBYTE)
- mm_log((1,"bndcheck: OVERRUN OF %d bytes detected: slot = %d, point = %p, size = %d\n", i+1, idx, pp, s ));
+ mm_log((1,"bndcheck: OVERRUN OF %d bytes detected: slot = %d, point = %p, size = %ld\n", i+1, idx, pp, (long)s ));
+ }
}
void
int idx;
mm_log((1, "bndcheck_all()\n"));
for(idx=0; idx<MAXMAL; idx++)
- if (malloc_pointers[idx].point)
+ if (malloc_pointers[idx].ptr)
bndcheck(idx);
}
-
-
-
-
void
myfree_file_line(void *p, char *file, int line) {
char *pp = p;
int match = 0;
int i;
+
+ if (p == NULL)
+ return;
- for(i=0; i<MAXMAL; i++) if (malloc_pointers[i].point == p) {
- mm_log((1,"myfree_file_line: pointer %i (%s) freed at %s (%i)\n", i, malloc_pointers[i].comm, file, line));
+ for(i=0; i<MAXMAL; i++) if (malloc_pointers[i].ptr == p) {
+ mm_log((1,"myfree_file_line: pointer %i (%s (%d)) freed at %s (%i)\n", i, malloc_pointers[i].file, malloc_pointers[i].line, file, line));
bndcheck(i);
- malloc_pointers[i].point = NULL;
+ malloc_pointers[i].ptr = NULL;
match++;
}
+
+ mm_log((1, "myfree_file_line: freeing address %p (real %p)\n", pp, pp-UNDRRNVAL));
if (match != 1) {
- mm_log((1, "myfree_file_line: INCONSISTENT REFCOUNT %d\n", match));
+ mm_log((1, "myfree_file_line: INCONSISTENT REFCOUNT %d at %s (%i)\n", match, file, line));
+ fprintf(stderr, "myfree_file_line: INCONSISTENT REFCOUNT %d at %s (%i)\n", match, file, line);
+ exit(255);
}
- mm_log((1, "myfree_file_line: freeing address %p\n", pp-UNDRRNVAL));
free(pp-UNDRRNVAL);
}
-#else
+void
+(myfree)(void *block) {
+ myfree_file_line(block, "unknown", 0);
+}
-#define malloc_comm(a,b) (mymalloc(a))
+#else
void
malloc_state() {
- printf("malloc_state: not in debug mode\n");
}
void*
-mymalloc(int size) {
+mymalloc(size_t size) {
void *buf;
- mm_log((1, "mymalloc(size %d)\n", size));
if ( (buf = malloc(size)) == NULL ) {
- mm_log((1, "mymalloc: unable to malloc %d\n", size));
- fprintf(stderr,"Unable to malloc.\n"); exit(3);
+ mm_log((1, "mymalloc: unable to malloc %ld\n", (long)size));
+ fprintf(stderr,"Unable to malloc %ld.\n", (long)size); exit(3);
}
+ mm_log((1, "mymalloc(size %ld) -> %p\n", (long)size, buf));
return buf;
}
+void *
+mymalloc_file_line(size_t size, char *file, int line) {
+ return mymalloc(size);
+}
+
void
myfree(void *p) {
mm_log((1, "myfree(p %p)\n", p));
free(p);
}
+void
+myfree_file_line(void *p, char *file, int line) {
+ myfree(p);
+}
+
void *
myrealloc(void *block, size_t size) {
void *result;
- mm_log((1, "myrealloc(block %p, size %u)\n", block, size));
+ mm_log((1, "myrealloc(block %p, size %ld)\n", block, (long)size));
if ((result = realloc(block, size)) == NULL) {
mm_log((1, "myrealloc: out of memory\n"));
fprintf(stderr, "Out of memory.\n");
return result;
}
+void *
+myrealloc_file_line(void *block, size_t newsize, char *file, int size) {
+ return myrealloc(block, newsize);
+}
+
#endif /* IMAGER_MALLOC_DEBUG */
+/* memory pool implementation */
+
+void
+i_mempool_init(i_mempool *mp) {
+ mp->alloc = 10;
+ mp->used = 0;
+ mp->p = mymalloc(sizeof(void*)*mp->alloc);
+}
+
+void
+i_mempool_extend(i_mempool *mp) {
+ mp->p = myrealloc(mp->p, mp->alloc * 2);
+ mp->alloc *=2;
+}
+
+void *
+i_mempool_alloc(i_mempool *mp, size_t size) {
+ if (mp->used == mp->alloc) i_mempool_extend(mp);
+ mp->p[mp->used] = mymalloc(size);
+ mp->used++;
+ return mp->p[mp->used-1];
+}
+
+void
+i_mempool_destroy(i_mempool *mp) {
+ unsigned int i;
+ for(i=0; i<mp->used; i++) myfree(mp->p[i]);
+ myfree(mp->p);
+}
+/* Should these really be here? */
+
#undef min
#undef max
-int
-min(int a,int b) {
+i_img_dim
+i_minx(i_img_dim a, i_img_dim b) {
if (a<b) return a; else return b;
}
-int
-max(int a,int b) {
+i_img_dim
+i_maxx(i_img_dim a, i_img_dim b) {
if (a>b) return a; else return b;
}
-int
-myread(int fd,void *buf,int len) {
- unsigned char* bufc;
- int bc,rc;
- bufc = (unsigned char*)buf;
- bc=0;
- while( ((rc=read(fd,bufc+bc,len-bc))>0 ) && (bc!=len) ) bc+=rc;
- if ( rc < 0 ) return rc;
- else return bc;
-}
-int
-mywrite(int fd,void *buf,int len) {
- unsigned char* bufc;
- int bc,rc;
- bufc=(unsigned char*)buf;
- bc=0;
- while(((rc=write(fd,bufc+bc,len-bc))>0) && (bc!=len)) bc+=rc;
- if (rc<0) return rc;
- else return bc;
-}
+struct utf8_size {
+ int mask, expect;
+ int size;
+};
-void
-interleave(unsigned char *inbuffer,unsigned char *outbuffer,int rowsize,int channels) {
- int ch,ind,i;
- i=0;
- if ( inbuffer==outbuffer ) return; /* Check if data is already in interleaved format */
- for( ind=0; ind<rowsize; ind++) for (ch=0; ch<channels; ch++) outbuffer[i++] = inbuffer[rowsize*ch+ind];
-}
+struct utf8_size utf8_sizes[] =
+{
+ { 0x80, 0x00, 1 },
+ { 0xE0, 0xC0, 2 },
+ { 0xF0, 0xE0, 3 },
+ { 0xF8, 0xF0, 4 },
+};
+
+/*
+=item i_utf8_advance(char **p, size_t *len)
+Retrieve a C<UTF-8> character from the stream.
+
+Modifies *p and *len to indicate the consumed characters.
+
+This doesn't support the extended C<UTF-8> encoding used by later
+versions of Perl. Since this is typically used to implement text
+output by font drivers, the strings supplied shouldn't have such out
+of range characters.
+
+This doesn't check that the C<UTF-8> character is using the shortest
+possible representation.
+
+Returns ~0UL on failure.
+
+=cut
+*/
+
+unsigned long
+i_utf8_advance(char const **p, size_t *len) {
+ unsigned char c;
+ int i, ci, clen = 0;
+ unsigned char codes[3];
+ if (*len == 0)
+ return ~0UL;
+ c = *(*p)++; --*len;
+
+ for (i = 0; i < sizeof(utf8_sizes)/sizeof(*utf8_sizes); ++i) {
+ if ((c & utf8_sizes[i].mask) == utf8_sizes[i].expect) {
+ clen = utf8_sizes[i].size;
+ break;
+ }
+ }
+ if (clen == 0 || *len < clen-1) {
+ --*p; ++*len;
+ return ~0UL;
+ }
+
+ /* check that each character is well formed */
+ i = 1;
+ ci = 0;
+ while (i < clen) {
+ if (((*p)[ci] & 0xC0) != 0x80) {
+ --*p; ++*len;
+ return ~0UL;
+ }
+ codes[ci] = (*p)[ci];
+ ++ci; ++i;
+ }
+ *p += clen-1; *len -= clen-1;
+ if (c & 0x80) {
+ if ((c & 0xE0) == 0xC0) {
+ return ((c & 0x1F) << 6) + (codes[0] & 0x3F);
+ }
+ else if ((c & 0xF0) == 0xE0) {
+ return ((c & 0x0F) << 12) | ((codes[0] & 0x3F) << 6) | (codes[1] & 0x3f);
+ }
+ else if ((c & 0xF8) == 0xF0) {
+ return ((c & 0x07) << 18) | ((codes[0] & 0x3F) << 12)
+ | ((codes[1] & 0x3F) << 6) | (codes[2] & 0x3F);
+ }
+ else {
+ *p -= clen; *len += clen;
+ return ~0UL;
+ }
+ }
+ else {
+ return c;
+ }
+}
projects / imager.git / blobdiff