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 <libunwind.h>
// #include <libunwind.h>
#include <unistd.h>
void customFunction1(int n);
@@ -7,38 +7,38 @@ void customFunction2(int n);
void customFunction3(int n);
// Call this function to get a backtrace.
void backtrace() {
unw_cursor_t cursor;
unw_context_t context;
// void backtrace() {
// unw_cursor_t cursor;
// unw_context_t context;
// Initialize cursor to current frame for local unwinding.
unw_getcontext(&context);
unw_init_local(&cursor, &context);
// // Initialize cursor to current frame for local unwinding.
// unw_getcontext(&context);
// unw_init_local(&cursor, &context);
// Unwind frames one by one, going up the frame stack.
while (unw_step(&cursor) > 0) {
unw_word_t offset, pc;
unw_get_reg(&cursor, UNW_REG_IP, &pc);
if (pc == 0) {
break;
}
printf("0x%lx:", pc);
// // Unwind frames one by one, going up the frame stack.
// while (unw_step(&cursor) > 0) {
// unw_word_t offset, pc;
// unw_get_reg(&cursor, UNW_REG_IP, &pc);
// if (pc == 0) {
// break;
// }
// printf("0x%lx:", pc);
char sym[256];
if (unw_get_proc_name(&cursor, sym, sizeof(sym), &offset) == 0) {
printf(" (%s+0x%lx)\n", sym, offset);
} else {
printf(" -- error: unable to obtain symbol name for this frame\n");
}
}
}
// char sym[256];
// if (unw_get_proc_name(&cursor, sym, sizeof(sym), &offset) == 0) {
// printf(" (%s+0x%lx)\n", sym, offset);
// } else {
// printf(" -- error: unable to obtain symbol name for this frame\n");
// }
// }
// }
void customFunction1(int n) {
if(n <= 0) {
printf("End of recursion\n");
// output backtrace
printf("pid: %d\n", getpid());
backtrace();
// backtrace();
while (1) {
sleep(1);
} // never return, keep stack