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Split off the compiler-depended wallclock time function in a separate function.

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sidney 2024-12-27 08:57:58 +01:00
parent c735a83a98
commit 58b8c14738
1 changed files with 40 additions and 21 deletions
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61
src/sim65/peripherals.c
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@ -52,6 +52,44 @@ Sim65Peripherals Peripherals;
/* Code */
/*****************************************************************************/
static bool GetWallclockTime (struct timespec * ts)
{
/* Note: the 'struct timespec' type is supported on all compilers we want to support. */
#if defined(__MINGW64__)
/* This check comes before the check on symbol __MINGW32__, as MinGW64 defines both.
*
* When using the MinGW64 compiler, neither timespec_get() nor clock_gettime()
* are available; this makes the Linux workflow build fail.
* The gettimeofday() function works, so use that.
*/
struct timeval tv;
bool time_valid = (gettimeofday(&tv, NULL) == 0);
if (time_valid)
{
ts->tv_sec = tv.tv_sec;
ts->tv_nsec = tv.tv_usec * 1000;
}
#elif defined(__MINGW32__)
/* The MinGW32 compiler is not used in the build process.
* Support can be added when the need arises.
*/
#error "The MinGW32 compiler is not supported."
#elif defined(_MSC_VER)
/* Using the Microsoft C++ compiler.
* clock_gettime() is not available; use timespec_get() instead.
*/
bool time_valid = timespec_get(ts, TIME_UTC) == TIME_UTC;
#else
/* Other platforms (Linux, MacOS, ...): assume that clock_gettime()
* is available.
*/
bool time_valid = clock_gettime(CLOCK_REALTIME, ts) == 0;
#endif
return time_valid;
}
void PeripheralsWriteByte (uint8_t Addr, uint8_t Val)
@ -67,28 +105,9 @@ void PeripheralsWriteByte (uint8_t Addr, uint8_t Val)
/* Latch the current wallclock time before doing anything else. */
struct timespec ts; /* Available on all compilers we use. */
struct timespec ts; /* The type is available on all compilers we use. */
bool time_valid = GetWallclockTime (&ts);
#if defined(__MINGW64__)
/* Note: we check for MINGW64 before MINGW32, since MINGW64 also defines __MINGW32__. */
/* Using timespec_get() in the MinGW64 compiler makes the Linux workflow build fail. */
/* Using clock_gettime() in the MinGW64 compiler makes the Linux workflow build fail. */
struct timeval tv;
bool time_valid = (gettimeofday(&tv, NULL) == 0);
if (time_valid)
{
ts.tv_sec = tv.tv_sec;
ts.tv_nsec = tv.tv_usec * 1000;
}
#elif defined(__MINGW32__)
#error "MinGW32 compiler detected, but we're not handling it."
#elif defined(_MSC_VER)
/* clock_gettime() is not available when using the Microsoft compiler. Use timespec_get() instead. */
bool time_valid = timespec_get(&ts, TIME_UTC) == TIME_UTC;
#else
/* clock_gettime() is available on Linux and MacOS. */
bool time_valid = clock_gettime(CLOCK_REALTIME, &ts) == 0;
#endif
if (time_valid) {
/* Wallclock time: number of nanoseconds since 1-1-1970. */
Peripherals.Counter.LatchedWallclockTime = 1000000000 * (uint64_t)ts.tv_sec + ts.tv_nsec;