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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
// The trace file looks like an array of struct __malloc_trace_buffer_s
#include "mtrace.h"
typedef long long BIG;
static BIG
get_int (unsigned char **ptr)
{
BIG rv = 0;
while (1)
{
unsigned char c = *(*ptr)++;
rv |= (c & 0x7f);
if (c & 0x80)
rv <<= 7;
else
return rv;
}
}
int
data_looks_like_raw_trace (unsigned char *data, long n_data)
{
long lim = n_data > 1024 ? 1020 : (n_data - 4);
long i;
// free and malloc calls will have a NULL we can look for
for (i=0; i<lim; i++)
if (memcmp (data+i, "\0\0\0\0", 4) == 0)
return 1;
return 0;
}
const char * const typenames[] = {
"unused",
"malloc",
"calloc",
"free",
"realloc",
"memalign",
"valloc",
"pvalloc",
"posix_memalign",
};
void
dump_raw_trace (unsigned char *data, long n_data)
{
unsigned char *edata = data + n_data;
long head;
head = n_data / sizeof (struct __malloc_trace_buffer_s);
printf ("%ld out of %ld events captured (I think)\n", head, head);
printf ("%8s %8s %8s %16s %16s %16s %16s %16s\n",
"threadid", "type", "path", "ptr1", "size", "ptr2", "size2", "size3");
while (data <= edata - sizeof (struct __malloc_trace_buffer_s))
{
struct __malloc_trace_buffer_s *t = (struct __malloc_trace_buffer_s *)data;
switch (t->type)
{
case __MTB_TYPE_UNUSED:
break;
default:
/* Consider 'memalign' to be the largest API word we want to align
on so make the name 8 chars wide at a minimum. */
printf ("%08x %8s %c%c%c%c%c%c%c%c%c%c%c%c%c%c %016llx %016llx %016llx %016llx %016llx\n",
t->thread,
t->type == __MTB_TYPE_MAGIC ? "magic" : typenames[t->type],
t->path_thread_cache ? 'T' : '-',
t->path_cpu_cache ? 'c' : '-',
t->path_cpu_cache2 ? 'C' : '-',
t->path_sbrk ? 's' : '-',
t->path_mmap ? 'M' : '-',
t->path_munmap ? 'U' : '-',
t->path_m_f_realloc ? 'R' : '-',
t->path_hook ? 'H' : '-',
t->path_unsorted_add ? 'U' : '-',
t->path_unsorted_remove ? 'u' : '-',
t->path_unsorted_empty ? 'E' : '-',
t->path_fastbin_add ? 'F' : '-',
t->path_fastbin_remove ? 'f' : '-',
t->path_malloc_consolidate ? 'C' : '-',
(long long unsigned int) (size_t) t->ptr1,
(long long unsigned int) t->size,
(long long unsigned int) (size_t) t->ptr2,
(long long unsigned int) t->size2,
(long long unsigned int) t->size3);
break;
}
data += sizeof (struct __malloc_trace_buffer_s);
}
}
void
dump_workload (unsigned char *data, long n_data)
{
unsigned char *orig_data = data;
unsigned char *edata = data + n_data;
BIG thread_idx = 0;
BIG n_ptrs, n_syncs, n_threads, idx, p1, p2, sz;
while (data < edata)
{
printf("%016lx: %4lld: ", data - orig_data, thread_idx);
switch (*data++)
{
case C_NOP:
break;
case C_ALLOC_PTRS:
n_ptrs = get_int(&data);
printf("AllocPtrs: %lld\n", n_ptrs);
break;
case C_ALLOC_SYNCS:
n_syncs = get_int(&data);
printf("AllocSyncs: %lld\n", n_syncs);
break;
case C_NTHREADS:
n_threads = get_int (&data);
printf("NThreads: %lld\n", n_threads);
break;
case C_START_THREAD:
idx = get_int (&data);
printf("StartThread: 0x%llx\n", idx);
break;
case C_DONE:
printf("Done\n");
thread_idx ++;
break;
case C_MALLOC:
p2 = get_int (&data);
sz = get_int (&data);
printf("Malloc (%lld) -> %lld\n", sz, p2);
break;
case C_CALLOC:
p2 = get_int (&data);
sz = get_int (&data);
printf("Calloc (%lld) -> %lld\n", sz, p2);
break;
case C_REALLOC:
p2 = get_int (&data);
p1 = get_int (&data);
sz =
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