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#include <stdio.h>
#include "misc.h"
#include "mlvalues.h"
char * young_start, * young_ptr, * young_end;
char * old_start, * old_ptr, * old_end;
value ** remembered_start, ** remembered_ptr, ** remembered_end;
void failed_assert(file, line)
char * file;
int line;
{
fprintf(stderr, "Failed assertion, file %s, line %d\n", file, line);
exit(2);
}
extern unsigned long _etext;
long current_break;
/* Check that an object is (reasonably) well-formed */
#define MAX_SIZE 63
#define MAX_TAG 1
void check_field(v)
value v;
{
if (Is_int(v)) return;
Assert((v & (sizeof(value) - 1)) == 0);
Assert(v >= (long) &_etext && v <= (long) current_break);
if ((char *)v > young_start && (char *)v <= young_end) {
Assert((char *)v > young_ptr);
}
}
void check_value(v)
value v;
{
header_t hdr, sz;
int i;
if (Is_int(v)) return;
check_field(v);
hdr = Header_val(v);
sz = Size_val(v);
Assert((hdr & 0x300) == 0);
switch(Tag_header(hdr)) {
case Double_tag:
Assert(sz == sizeof(double) / sizeof(value));
break;
case String_tag:
i = ((char *)v)[sz * sizeof(value) - 1];
Assert(i >= 0 && i < sizeof(value));
Assert(((char *)v)[sz * sizeof(value) - 1 - i] == 0);
break;
case Abstract_tag:
case Finalized_tag:
Assert(0);
break;
case Infix_tag:
v -= sz * sizeof(value);
Assert(Header_val(v) == Closure_tag);
check_value(v);
break;
case Closure_tag:
Assert(Field(v, 0) < (long)&_etext);
if (Field(v, 1) == Val_int(1)) {
i = 2;
} else {
Assert(Is_int(Field(v, 1)));
Assert(Field(v, 2) < (long)&_etext);
i = 3;
}
while(1) {
hdr = (header_t) Field(v, i);
if (Tag_header(hdr) != Infix_tag) break;
i++;
Assert(Size_header(hdr) == i);
Assert(Field(v, i) < (long)&_etext);
i++;
if (Field(v, i) == Val_int(1)) {
i++;
} else {
Assert(Is_int(Field(v, i)));
i++;
Assert(Field(v, i) < (long)&_etext);
i++;
}
}
for (/*nothing*/; i < sz; i++) check_field(Field(v, i));
break;
default:
#ifdef MAX_SIZE
Assert(sz <= MAX_SIZE);
#endif
#ifdef MAX_TAG
Assert(Tag_header(hdr) <= MAX_TAG);
#endif
for (i = 0; i < sz; i++) check_field(Field(v, i));
break;
}
}
/* Check that a heap chunk is well-formed */
void check_heap(start, end)
char * start;
char * end;
{
char * p;
value v;
current_break = sbrk(0);
p = start;
while (p < end) {
v = (value)(p + sizeof(header_t));
check_value(v);
p += sizeof(header_t) + Size_val(v) * sizeof(value);
}
Assert(p == end);
}
/* Check the globals */
extern value * caml_globals[];
void check_globals()
{
int i;
current_break = sbrk(0);
for (i = 0; caml_globals[i] != 0; i++) {
value v = *(caml_globals[i]);
if (v != 0) check_value(v);
}
}
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