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Internals: Add VL_MT_SAFE flags

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Wilson Snyder 2024-03-30 11:54:29 -04:00
parent e390d6779d
commit 840970e8f7
2 changed files with 14 additions and 12 deletions
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14
include/verilatedos.h
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@ -616,35 +616,35 @@ static inline double VL_ROUND(double n) {
namespace VlOs {
extern uint64_t memUsageBytes(); ///< Return memory usage in bytes, or 0 if not implemented
extern uint64_t memUsageBytes() VL_MT_SAFE; ///< Return memory usage in bytes, or 0 if unknown
// Internal: Record CPU time, starting point on construction, and current delta from that
class DeltaCpuTime final {
double m_start{}; // Time constructed at
static double gettime();
static double gettime() VL_MT_SAFE;
public:
// Construct, and if startit is true, start() timer
explicit DeltaCpuTime(bool startit) {
if (startit) start();
}
void start() { m_start = gettime(); } // Start timer; record current time
double deltaTime() const { // Return time between now and start()
void start() VL_MT_SAFE { m_start = gettime(); } // Start timer; record current time
double deltaTime() const VL_MT_SAFE { // Return time between now and start()
return (m_start == 0.0) ? 0.0 : gettime() - m_start;
}
};
// Internal: Record wall time, starting point on construction, and current delta from that
class DeltaWallTime final {
double m_start{}; // Time constructed at
static double gettime();
static double gettime() VL_MT_SAFE;
public:
// Construct, and if startit is true, start() timer
explicit DeltaWallTime(bool startit) {
if (startit) start();
}
void start() { m_start = gettime(); } // Start timer; record current time
double deltaTime() const { // Return time between now and start()
void start() VL_MT_SAFE { m_start = gettime(); } // Start timer; record current time
double deltaTime() const VL_MT_SAFE { // Return time between now and start()
return (m_start == 0.0) ? 0.0 : gettime() - m_start;
}
};

12
include/verilatedos_c.h
View File

@ -38,7 +38,7 @@ namespace VlOs {
//=========================================================================
// VlOs::VlGetCpuTime/VlGetWallTime implementation
double DeltaCpuTime::gettime() {
double DeltaCpuTime::gettime() VL_MT_SAFE {
#if defined(_WIN32) || defined(__MINGW32__)
FILETIME lpCreationTime, lpExitTime, lpKernelTime, lpUserTime;
if (0
@ -51,11 +51,12 @@ double DeltaCpuTime::gettime() {
#else
// NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
timespec ts;
if (0 != clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts)) return ts.tv_sec + ts.tv_nsec * 1e-9;
if (0 != clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts)) // MT-Safe
return ts.tv_sec + ts.tv_nsec * 1e-9;
#endif
return 0.0;
}
double DeltaWallTime::gettime() {
double DeltaWallTime::gettime() VL_MT_SAFE {
#if defined(_WIN32) || defined(__MINGW32__)
FILETIME ft; // contains number of 0.1us intervals since the beginning of 1601 UTC.
GetSystemTimeAsFileTime(&ft);
@ -65,7 +66,8 @@ double DeltaWallTime::gettime() {
#else
// NOLINTNEXTLINE(cppcoreguidelines-pro-type-member-init)
timespec ts;
if (0 == clock_gettime(CLOCK_MONOTONIC, &ts)) return ts.tv_sec + ts.tv_nsec * 1e-9;
if (0 == clock_gettime(CLOCK_MONOTONIC, &ts)) // MT-Safe
return ts.tv_sec + ts.tv_nsec * 1e-9;
return 0.0;
#endif
}
@ -73,7 +75,7 @@ double DeltaWallTime::gettime() {
//=========================================================================
// VlOs::memUsageBytes implementation
uint64_t memUsageBytes() {
uint64_t memUsageBytes() VL_MT_SAFE {
#if defined(_WIN32) || defined(__MINGW32__)
const HANDLE process = GetCurrentProcess();
PROCESS_MEMORY_COUNTERS pmc;