gfwleak/zhangyang-variable-monitor
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remove libunwind

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zy
2023-12-04 22:49:57 -05:00
parent a880fd3b32
commit 9064e9e01e
1 changed files with 24 additions and 24 deletions
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48
testcase/userstack.c
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@@ -1,5 +1,5 @@
#include <stdio.h> #include <stdio.h>
#include <libunwind.h> // #include <libunwind.h>
#include <unistd.h> #include <unistd.h>
void customFunction1(int n); void customFunction1(int n);
@@ -7,38 +7,38 @@ void customFunction2(int n);
void customFunction3(int n); void customFunction3(int n);
// Call this function to get a backtrace. // Call this function to get a backtrace.
void backtrace() { // void backtrace() {
unw_cursor_t cursor; // unw_cursor_t cursor;
unw_context_t context; // unw_context_t context;
// Initialize cursor to current frame for local unwinding. // // Initialize cursor to current frame for local unwinding.
unw_getcontext(&context); // unw_getcontext(&context);
unw_init_local(&cursor, &context); // unw_init_local(&cursor, &context);
// Unwind frames one by one, going up the frame stack. // // Unwind frames one by one, going up the frame stack.
while (unw_step(&cursor) > 0) { // while (unw_step(&cursor) > 0) {
unw_word_t offset, pc; // unw_word_t offset, pc;
unw_get_reg(&cursor, UNW_REG_IP, &pc); // unw_get_reg(&cursor, UNW_REG_IP, &pc);
if (pc == 0) { // if (pc == 0) {
break; // break;
} // }
printf("0x%lx:", pc); // printf("0x%lx:", pc);
char sym[256]; // char sym[256];
if (unw_get_proc_name(&cursor, sym, sizeof(sym), &offset) == 0) { // if (unw_get_proc_name(&cursor, sym, sizeof(sym), &offset) == 0) {
printf(" (%s+0x%lx)\n", sym, offset); // printf(" (%s+0x%lx)\n", sym, offset);
} else { // } else {
printf(" -- error: unable to obtain symbol name for this frame\n"); // printf(" -- error: unable to obtain symbol name for this frame\n");
} // }
} // }
} // }
void customFunction1(int n) { void customFunction1(int n) {
if(n <= 0) { if(n <= 0) {
printf("End of recursion\n"); printf("End of recursion\n");
// output backtrace // output backtrace
printf("pid: %d\n", getpid()); printf("pid: %d\n", getpid());
backtrace(); // backtrace();
while (1) { while (1) {
sleep(1); sleep(1);
} // never return, keep stack } // never return, keep stack