int main(int argc,
char **argv) {
char buffer[4096];
char *bufptr = buffer;
size_t ix;
/* type signature of main is constrained by SDL */
UNREFERENCED_PARAMETER(argc);
UNREFERENCED_PARAMETER(argv);
NACL_ASSERT_IS_POINTER(bufptr);
NACL_ASSERT_IS_ARRAY(buffer);
/*
* NACL_ASSERT_IS_ARRAY(bufptr);
*/
printf("#buffer = %"NACL_PRIuS"\n", NACL_ARRAY_SIZE(buffer));
/*
* printf("#bufptr = %lu\n", ARRAY_SIZE(bufptr));
*/
/*
* for checking that the store to gNaClArrayCheck is moved out of
* the loop.
*/
for (ix = 0; ix < NACL_ARRAY_SIZE(buffer); ++ix) {
buffer[ix] = (char) ix;
}
return (buffer[10] + buffer[4095] == 0); /* loop was not dead code! */
}
int main(void) {
char buffer[4096];
char *bufptr = buffer;
size_t ix;
NACL_ASSERT_IS_POINTER(bufptr);
NACL_ASSERT_IS_ARRAY(buffer);
/*
* NACL_ASSERT_IS_ARRAY(bufptr);
*/
printf("#buffer = %"NACL_PRIuS"\n", NACL_ARRAY_SIZE(buffer));
/*
* printf("#bufptr = %lu\n", ARRAY_SIZE(bufptr));
*/
/*
* for checking that the store to gNaClArrayCheck is moved out of
* the loop.
*/
for (ix = 0; ix < NACL_ARRAY_SIZE(buffer); ++ix) {
buffer[ix] = (char) ix;
}
return (buffer[10] + buffer[4095] == 0); /* loop was not dead code! */
}
int main(void) {
char buffer[4096];
NACL_ASSERT_IS_ARRAY(buffer);
return 0;
}
/*
* Records the time in sv and returns its index in sv
* Note that the first time this routine is called on a sv that was just
* constructed via NaClPerfCounterCtor(), it will return 1, but that
* is actually the SECOND sample.
*/
int NaClPerfCounterMark(struct NaClPerfCounter *sv, const char *ev_name)
{
if((NULL == sv) || (NULL == ev_name))
{
ZLOG(LOG_ERROR, "NaClPerfCounterMark received null args");
return -1;
}
if(sv->samples >= NACL_MAX_PERF_COUNTER_SAMPLES)
{
ZLOG(LOG_ERROR, "NaClPerfCounterMark going beyond buffer size");
return -1;
}
/* busy loop until we succeed, damn it */
while(0 != NaClGetTimeOfDay(&(sv->sample_list[sv->samples])))
;
/*
* This relies upon memset() inside NaClPerfCounterCtor() for
* correctness
*/
NACL_ASSERT_IS_ARRAY(sv->sample_names[sv->samples]);
strncpy(sv->sample_names[sv->samples], ev_name, LAST_IDX(sv->sample_names[sv->samples]));
/* Being explicit about string termination */
sv->sample_names[sv->samples][LAST_IDX(sv->sample_names[sv->samples])] = '\0';
return (sv->samples)++;
}
void NaClPerfCounterCtor(struct NaClPerfCounter *sv, const char *app_name)
{
if(NULL == sv)
{
ZLOG(LOG_ERROR, "NaClPerfCounterStart received null pointer");
return;
};
memset(sv, 0, sizeof(struct NaClPerfCounter));
if(NULL == app_name)
{
app_name = "__unknown_app__";
}
NACL_ASSERT_IS_ARRAY(sv->app_name);
strncpy(sv->app_name, app_name, LAST_IDX(sv->app_name));
/* Being explicit about string termination */
sv->app_name[LAST_IDX(sv->app_name)] = '\0';
strncpy(sv->sample_names[0], "__start__", LAST_IDX(sv->sample_names[0]));
while(0 != NaClGetTimeOfDay(&sv->sample_list[sv->samples]))
{
/* repeat until we get a sample */
}
sv->samples++;
}
/*
* __NaClSrpcImcWrite attempts to write n_elt elements of size elt_size from
* source to the specified buffer. It returns the number of elements it
* wrote if successful, and -1 otherwise.
*/
nacl_abi_size_t __NaClSrpcImcWrite(const void* source,
nacl_abi_size_t elt_size,
nacl_abi_size_t n_elt,
NaClSrpcImcBuffer* buffer) {
nacl_abi_size_t request_bytes;
nacl_abi_size_t avail_bytes;
/*
* What follows works on the assumption that buffer->bytes is an array,
* rather than a pointer to a buffer. If it were the latter, the subtraction
* would almost invariably be negative, producing a massive size_t value
* and allowing heap corruptions.
*/
#ifndef __native_client__ /* these checks are unnecessary in an ILP32 module */
CHECK(sizeof(buffer->bytes) <= NACL_ABI_SIZE_T_MAX);
CHECK(sizeof(buffer->bytes) >= buffer->next_byte);
#endif /* __native_client__ */
avail_bytes =
nacl_abi_size_t_saturate(sizeof(buffer->bytes) - buffer->next_byte);
/*
* protect against future change of buffer->bytes to be dynamically
* allocated, since otherwise avail_bytes becomes huge
*/
NACL_ASSERT_IS_ARRAY(buffer->bytes);
if (n_elt >= SIZE_T_MAX / elt_size) {
return -1;
}
request_bytes = n_elt * elt_size;
/*
* Writes are not broken into multiple datagram sends for now either.
*/
if (avail_bytes < request_bytes) {
dprintf((SIDE "SRPC: WRITE: insufficient space available to satisfy.\n"));
return -1;
} else {
memcpy((void*)(buffer->bytes + buffer->next_byte), source, request_bytes);
buffer->next_byte += request_bytes;
return n_elt;
}
}
