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Code Issues 1 Releases Wiki Activity

Allow configuration of JANET_THREAD_LOCAL. Address #1595

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This is to better allow configuration on various, unknown compilers.
Previously, we hardcoded how thread local storage was specified for a
few different compilers, but we were not following and C standard. In
C11, there is a standardized storage specifier _Thread_local for this
storage class, however this is now deprecated in various C++ compilers
for a new keyword, confusingly. Janet also does not claim to require the
C11 standard, so for maximum flexibilty, the storage specifier must be
specified at configure time.
This commit is contained in:
Calvin Rose
2025-05-11 08:37:15 -05:00
parent bef8ba5e06
commit 3d3e880f52
5 changed files with 9 additions and 5 deletions
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8
src/include/janet.h
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@@ -170,14 +170,12 @@ extern "C" {
/* Also enable the thread library only if not single-threaded */
#ifdef JANET_SINGLE_THREADED
#define JANET_THREAD_LOCAL
#undef JANET_THREADS
#elif defined(__GNUC__)
#elif !(defined(JANET_THREAD_LOCAL)) && defined(__GNUC__)
#define JANET_THREAD_LOCAL __thread
#elif defined(_MSC_BUILD)
#elif !(defined(JANET_THREAD_LOCAL)) && defined(_MSC_BUILD)
#define JANET_THREAD_LOCAL __declspec(thread)
#else
#elif !(defined(JANET_THREAD_LOCAL))
#define JANET_THREAD_LOCAL
#undef JANET_THREADS
#endif
/* Enable or disable dynamic module loading. Enabled by default. */