jonroach
9 Jun 2026 08:24
1 contributor
- +
{line.log.rev}
on
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#include "generator.h" | |
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#include "coroutine.h" | ||||
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#include <stdlib.h> | ||||
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#include <stdio.h> | ||||
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#include <assert.h> | ||||
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#include "cor_platform.h" | ||
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_Cor_thread_local Generator *g_active_generator = NULL; | ||
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static void | ||
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on_yield_gen( | ||||
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void *this | ||
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){ | ||||
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(void)this; | ||
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} | |
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static void | ||
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on_yield_gen_caller( | ||||
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void *this | ||
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){ | ||||
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(void)this; | ||
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} | ||||
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static void * | ||
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do_start( | ||||
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void *this | ||
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){ | ||||
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Generator *gen = (Generator *)this; | |
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g_active_generator = this; | ||
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assert(gen->state == Generator_Running || gen->state == Generator_Deleting); | |
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void *value; | ||||
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if (gen->state == Generator_Running){ | ||||
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g_active_generator = gen; | ||
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value = gen->start(gen->param); | |
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g_active_generator = NULL; | ||
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} else { | |
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// we are being deleted | ||||
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value = NULL; | ||||
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} | ||||
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gen->state = Generator_Complete; | ||||
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Coroutine_NS(Continue)(gen->caller, value, true); | ||
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return value; | |
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} | ||||
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void | ||
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Generator_ctor( | ||||
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Generator *gen, | ||
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size_t min_stack, | ||
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size_t min_stack_headroom, | ||||
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void *(*start)(void *), | ||
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void *param | ||||
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){ | ||||
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gen->start = start; | |
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gen->param = param; | ||||
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gen->coroutine = Coroutine_NS(New)(min_stack, min_stack_headroom, do_start); | ||
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gen->yielded_coroutine = gen->coroutine; | ||
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gen->state = Generator_Running; | |
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} | ||
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Generator * | ||
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Generator_New( | ||||
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size_t min_stack, | ||||
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size_t min_stack_headroom, | ||||
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void *(*start)(void *), | ||
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void *param | ||||
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){ | ||||
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Generator *gen = malloc(sizeof(Generator)); | ||||
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Generator_ctor(gen, min_stack, min_stack_headroom, start, param); | ||
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return gen; | |
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} | ||||
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void | ||
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Generator_dtor( | ||||
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Generator *gen | ||
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){ | ||||
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assert(gen->state != Generator_Deleting); | |
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if (gen->state == Generator_Running){ | ||||
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gen->state = Generator_Deleting; | ||||
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gen->caller = Coroutine_NS(GetActive)(); | ||
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Coroutine_NS(Continue)(gen->yielded_coroutine, gen, true); | ||
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Coroutine_NS(Yield)(NULL, on_yield_gen_caller, gen); | ||
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} | |
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assert(gen->state == Generator_Complete); | ||||
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Coroutine_NS(Delete)(gen->coroutine); | ||
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} | ||
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void | ||
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Generator_Delete( | ||||
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Generator *gen | ||
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){ | ||||
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Generator_dtor(gen); | ||||
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free(gen); | |
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} | ||||
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bool | ||
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Generator_Next( | ||||
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Generator *gen, | ||
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void **value | ||||
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){ | ||||
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assert(gen->state != Generator_Deleting); | |
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if (gen->state == Generator_Complete){ | ||||
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return false; | ||||
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} | ||||
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gen->caller = Coroutine_NS(GetActive)(); | ||
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Coroutine_NS(Continue)(gen->yielded_coroutine, gen, true); | ||
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*value = Coroutine_NS(Yield)(NULL, on_yield_gen_caller, gen); | ||
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return Coroutine_NS(IsRunning)(gen->coroutine); | ||||
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} | |
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bool | ||
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Generator_Yield( | ||||
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void *value | ||
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) | ||||
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{ | |
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assert(g_active_generator); | ||
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Generator *gen = g_active_generator; | ||||
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g_active_generator = NULL; | ||||
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gen->yielded_coroutine = Coroutine_NS(GetActive)(); | ||
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Coroutine_NS(Continue)(gen->caller, value, true); | ||||
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Coroutine_NS(Yield)(value, on_yield_gen, NULL); | ||||
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g_active_generator = gen; | ||
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return gen->state == Generator_Running; | |
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} | ||||
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