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104
Add Coroutine_CallWithMaxStack()
jonroach 25 Jun 2026 10:09
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104
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 #include <stdio.h>
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 #include <stddef.h>
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 #include "coroutine.h"
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 #include "generator.h"
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 #include "asleep.h"
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 #include "task.h"
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 #include <dirent.h>
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 #include <string.h>
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 #include <stdlib.h>
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 #include <time.h>
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 #define DEMO_STACK_SIZE (8192*sizeof(void *))
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 void *stack_inner(void *param){
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 printf("%td) Inner headroom (big stack now) = %td\n", (ptrdiff_t)param, Coroutine_GetStackHeadroom());
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 // Stack may be trimmed here...
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 Generator_Yield(0);
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 printf("%td) Inner headroom (stack may be trimmed) = %td\n", (ptrdiff_t)param, Coroutine_GetStackHeadroom());
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 return NULL;
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 }
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 void *stack_outer(void *param){
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 printf("%td) Outer headroom (start) = %td\n", (ptrdiff_t)param, Coroutine_GetStackHeadroom());
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 Generator_Yield(0);
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 printf("%td) Outer headroom (may be trimmed) = %td\n", (ptrdiff_t)param, Coroutine_GetStackHeadroom());
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 Coroutine_CallWithMaxStack(stack_inner, param, NULL);
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 printf("%td) Outer headroom (return from call) = %td\n", (ptrdiff_t)param, Coroutine_GetStackHeadroom());
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 return NULL;
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 }
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 void *chaintest(
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 void *param
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 ){
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 (void)param;
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 // Need to run two coroutines so that at least one of their stacks is limited, and so
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 // needs to chain
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 Generator gen1;
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 Generator_ctor(&gen1, DEMO_STACK_SIZE, 0, stack_outer, (void *)0);
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 Generator gen2;
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 Generator_ctor(&gen2, DEMO_STACK_SIZE, 0, stack_outer, (void *)1);
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 void *param1;
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 void *param2;
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 while(Generator_Next(&gen1, &param1) && Generator_Next(&gen2, &param2)){
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 }
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 Generator_dtor(&gen2);
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 Generator_dtor(&gen1);
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 return param;
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 }
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 int main(int argc, char *argv[]) {
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 (void)argc;
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 (void)argv;
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 Coroutine_Run(DEMO_STACK_SIZE, 0, chaintest, NULL, NULL);
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 return 0;
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 }
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