先查看需要優(yōu)化項目的排列
1、Xcode：【Build Settings 】-> 【W(wǎng)rite Link Map File】 -> YES;
2聚蝶、然后Clean項目篡殷，運行钝吮，選擇Products 中的項目-> Show in Finder;
3、然后上上層，就是找到【Intermediates.noindex】->【FlashRider.build】->【Debug-iphonesimulator】（選擇對應(yīng)運行模式的）
->【FlashRider.build】->【FlashRider-LinkMap-normal-arm64.txt】
/**
Build Settings -> Other C Flags -> -fsanitize-coverage=func,trace-pc-guard
Build Settings -> Other Swift Flags -> -sanitize-coverage=func -sanitize=undefined
Build Settings -> Write Link Map File -> Yes
Build Settings -> Order File -> ./my.order
*/
#import "OrderFileTool.h"
#include <stdint.h>
#include <stdio.h>
#include <sanitizer/coverage_interface.h>
#import <dlfcn.h>
#import <libkern/OSAtomic.h>
@implementation OrderFileTool
//定義原子隊列
static OSQueueHead symbolList = OS_ATOMIC_QUEUE_INIT;
//定義符號結(jié)構(gòu)體
typedef struct{
void *pc;
void *next;
} SYNode;
void __sanitizer_cov_trace_pc_guard_init(uint32_t *start,
uint32_t *stop) {
static uint64_t N; // Counter for the guards.
if (start == stop || *start) return; // Initialize only once.
printf("INIT: %p %p\n", start, stop);
for (uint32_t *x = start; x < stop; x++)
*x = ++N;
}
void __sanitizer_cov_trace_pc_guard(uint32_t *guard) {
// if (!*guard) return;
//當(dāng)前函數(shù)返回到上一個調(diào)用的地址!!
void *PC = __builtin_return_address(0);
//創(chuàng)建結(jié)構(gòu)體!
SYNode * node = malloc(sizeof(SYNode));
*node = (SYNode){PC,NULL};
//加入結(jié)構(gòu)!
OSAtomicEnqueue(&symbolList, node, offsetof(SYNode, next));
}
- (void)createOrderFile {
//定義數(shù)組
NSMutableArray<NSString *> * symbolNames = [NSMutableArray array];
while (YES) {//一次循環(huán)!也會被HOOK一次!!
SYNode * node = OSAtomicDequeue(&symbolList, offsetof(SYNode, next));
if (node == NULL) {
break;
}
Dl_info info = {0};
dladdr(node->pc, &info);
// printf("%s \n",info.dli_sname);
NSString * name = @(info.dli_sname);
free(node);
BOOL isObjc = [name hasPrefix:@"+["]||[name hasPrefix:@"-["];
NSString * symbolName = isObjc ? name : [@"_" stringByAppendingString:name];
//是否去重??
[symbolNames addObject:symbolName];
/*
if ([name hasPrefix:@"+["]||[name hasPrefix:@"-["]) {
//如果是OC方法名稱直接存!
[symbolNames addObject:name];
continue;
}
//如果不是OC直接加個_存!
[symbolNames addObject:[@"_" stringByAppendingString:name]];
*/
}
//反向數(shù)組
// symbolNames = (NSMutableArray<NSString *>*)[[symbolNames reverseObjectEnumerator] allObjects];
NSEnumerator * enumerator = [symbolNames reverseObjectEnumerator];
//創(chuàng)建一個新數(shù)組
NSMutableArray * funcs = [NSMutableArray arrayWithCapacity:symbolNames.count];
NSString * name;
//去重!
while (name = [enumerator nextObject]) {
if (![funcs containsObject:name]) {//數(shù)組中不包含name
[funcs addObject:name];
}
}
[funcs removeObject:[NSString stringWithFormat:@"%s",__FUNCTION__]];
//數(shù)組轉(zhuǎn)成字符串
NSString * funcStr = [funcs componentsJoinedByString:@"\n"];
NSLog(@"OrderFile###%@",funcStr);
//字符串寫入文件
//文件路徑
NSString * filePath = [NSTemporaryDirectory() stringByAppendingPathComponent:@"my.order"];
//文件內(nèi)容
NSData * fileContents = [funcStr dataUsingEncoding:NSUTF8StringEncoding];
[[NSFileManager defaultManager] createFileAtPath:filePath contents:fileContents attributes:nil];
}
@end
