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Add janet_interpreter_interrupt for custom scheduling.

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This would allow an embedder to suspend the current Janet fiber
via an external event like a signal, other thread, or really anything.
This is a useful primitive for custom schedulers that would call
janet_interpreter_interupt periodically (say, in an interval with SIG_ALRM),
do some work, and then use janet_continue on the janet_root_fiber, or
for embedding into other soft-realtime applications like a game. To say,
only allow about 5ms per frame of interpreter time.
This commit is contained in:
bakpakin
2021-07-24 15:14:37 -05:00
parent aafc595e3a
commit 160dd830a0
7 changed files with 46 additions and 0 deletions
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src/include/janet.h
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@@ -1660,9 +1660,11 @@ JANET_API int32_t janet_sorted_keys(const JanetKV *dict, int32_t cap, int32_t *i
JANET_API int janet_init(void);
JANET_API void janet_deinit(void);
JANET_API JanetVM *janet_vm_alloc(void);
JANET_API JanetVM *janet_local_vm(void);
JANET_API void janet_vm_free(JanetVM *vm);
JANET_API void janet_vm_save(JanetVM *into);
JANET_API void janet_vm_load(JanetVM *from);
JANET_API void janet_interpreter_interrupt(JanetVM *vm);
JANET_API JanetSignal janet_continue(JanetFiber *fiber, Janet in, Janet *out);
JANET_API JanetSignal janet_continue_signal(JanetFiber *fiber, Janet in, Janet *out, JanetSignal sig);
JANET_API JanetSignal janet_pcall(JanetFunction *fun, int32_t argn, const Janet *argv, Janet *out, JanetFiber **f);