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50 lines
969 B
C++
50 lines
969 B
C++
/*
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# see: https://github.com/ossrs/srs/wiki/v1_CN_SrsLinuxArm
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g++ -g -O0 -o jmp jmp.cpp
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arm-linux-gnueabi-g++ -o jmp jmp.cpp -static
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arm-linux-gnueabi-strip jmp
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <setjmp.h>
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bool func1_ok = false, func2_ok = false;
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jmp_buf env_func1, env_func2;
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int sum = 0;
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void func1() {
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int ret = setjmp(env_func1);
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printf("[func1] setjmp ret=%d, sum++=%d\n", ret, sum++);
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func1_ok = true;
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sleep(1);
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// jmp to func2
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if (func2_ok) {
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longjmp(env_func2, 1);
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}
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}
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void func2() {
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int ret = setjmp(env_func2);
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printf("[func2] setjmp ret=%d, sum++=%d\n", ret, sum++);
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func2_ok = true;
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sleep(1);
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// jmp to func1
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if (func1_ok) {
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longjmp(env_func1, 2);
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}
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}
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int main(int argc, char** argv) {
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printf("hello, setjmp/longjmp!\n");
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func1();
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func2();
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printf("jmp finished, sum=%d\n", sum);
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return 0;
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}
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