manupa-arm commented on a change in pull request #7266:
URL: https://github.com/apache/tvm/pull/7266#discussion_r559456083
##########
File path: src/runtime/crt/host/main.cc
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@@ -93,6 +94,20 @@ tvm_crt_error_t TVMPlatformTimerStop(double*
elapsed_time_seconds) {
g_utvm_timer_running = 0;
return kTvmErrorNoError;
}
+
+static_assert(RAND_MAX >= (1 << 8), "RAND_MAX is smaller than acceptable");
+unsigned int random_seed = 0;
+tvm_crt_error_t TVMPlatformGenerateRandom(uint8_t* buffer, size_t num_bytes) {
+ if (random_seed == 0) {
+ random_seed = (unsigned int)time(NULL);
+ }
+ for (size_t i = 0; i < num_bytes; ++i) {
+ int random = rand_r(&random_seed);
+ buffer[i] = (uint8_t)random;
Review comment:
I see that zephyr one has a better version -- as in all the 4 bytes of
random is being used with a prologue to handle the tail. I think that is a
better implementation. Since you have it already, could anything be done to
make that part common in the code base and use it here as well ?
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