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test: add rnd and delay tools.

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This commit is contained in:
Leo Yuriev
2017-04-21 18:33:35 +03:00
parent 99dd373215
commit 2523170806
7 changed files with 389 additions and 8 deletions
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54
test/utils.h
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@@ -271,6 +271,50 @@ static __inline size_t roundup2(size_t value, size_t granularity) {
//-----------------------------------------------------------------------------
static __inline void memory_barrier(void) {
#if __has_extension(c_atomic) || __has_extension(cxx_atomic)
__c11_atomic_thread_fence(__ATOMIC_SEQ_CST);
#elif defined(__ATOMIC_SEQ_CST)
__atomic_thread_fence(__ATOMIC_SEQ_CST);
#elif defined(__clang__) || defined(__GNUC__)
__sync_synchronize();
#elif defined(_MSC_VER)
MemoryBarrier();
#elif defined(__INTEL_COMPILER) /* LY: Intel Compiler may mimic GCC and MSC */
#if defined(__ia64__) || defined(__ia64) || defined(_M_IA64)
__mf();
#elif defined(__i386__) || defined(__x86_64__)
_mm_mfence();
#else
#error "Unknown target for Intel Compiler, please report to us."
#endif
#elif defined(__SUNPRO_C) || defined(__sun) || defined(sun)
__machine_rw_barrier();
#elif (defined(_HPUX_SOURCE) || defined(__hpux) || defined(__HP_aCC)) && \
(defined(HP_IA64) || defined(__ia64))
_Asm_mf();
#elif defined(_AIX) || defined(__ppc__) || defined(__powerpc__) || \
defined(__ppc64__) || defined(__powerpc64__)
__lwsync();
#else
#error "Could not guess the kind of compiler, please report to us."
#endif
}
static __inline void cpu_relax() {
#if defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) || \
defined(_M_X64)
_mm_pause();
#elif defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS) || \
defined(YieldProcessor)
YieldProcessor();
#else
/* nope */
#endif
}
//-----------------------------------------------------------------------------
struct simple_checksum {
uint64_t value;
@@ -310,3 +354,13 @@ bool hex2data(const char *hex_begin, const char *hex_end, void *ptr,
size_t bytes, simple_checksum &checksum);
std::string format(const char *fmt, ...);
uint64_t entropy_ticks(void);
uint64_t entropy_white(void);
uint64_t prng64_careless(uint64_t &state);
uint64_t prng64_white(uint64_t &state);
uint32_t prng32(uint64_t &state);
bool flipcoin();
bool jitter(unsigned probability_percent);
void jitter_delay(bool extra = false);