添加调试

This commit is contained in:
2025-10-19 11:44:16 +00:00
parent 9eb6989ad0
commit 97d7d66548
6 changed files with 192 additions and 51 deletions

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@@ -1,16 +1,18 @@
FROM mcr.microsoft.com/devcontainers/base:dev-ubuntu-20.04
# 安装 build-essential
# 安装 build-essential 和调试工具
RUN apt-get update && \
apt-get install -y --no-install-recommends build-essential && \
#清理 apt 缓存
apt-get install -y --no-install-recommends \
build-essential \
gdb \ # 添加GDB调试器
gcc \
make && \
# 清理 apt 缓存
apt-get autoremove -y && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*
# 设置工作目录(可选)
WORKDIR /workspace
# 设置工作目录
WORKDIR /workspace
# 可以添加其他的自定义设置,比如复制源代码等
CMD ["/bin/bash"] # 可以添加默认命令,比如进入 bash
CMD ["/bin/bash"]

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@@ -1,18 +1,23 @@
{
"name": "DevContainerExample",
"image": "mcr.microsoft.com/devcontainers/base:dev-ubuntu-20.04",
"postCreateCommand": "sudo apt-get update && sudo apt-get install -y gdb && make",
"customizations": {
"vscode": {
"settings": {},
"extensions": [
]
}
"vscode": {
"settings": {
"debug.onTaskErrors": "debugAnyway"
},
"extensions": [
"ms-vscode.cpptools"
]
}
},
"portsAttributes": {
"3000": {
"label": "Web Server",
"onAutoForward": "notify"
}
}
}
"3000": {
"label": "Web Server",
"onAutoForward": "notify"
}
},
"initializeCommand": "gdb -ex 'set confirm off' -ex quit", // 初始化GDB配置
"postAttachCommand": "make debug" // 假设你的Makefile有debug目标
}

65
.vscode/launch.json vendored Normal file
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@@ -0,0 +1,65 @@
{
"version": "0.2.0",
"configurations": [
{
"name": "Debug fork",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/fork",
"args": [],
"stopAtEntry": false,
"cwd": "${workspaceFolder}",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"setupCommands": [
{
"description": "Enable pretty-printing for gdb",
"text": "-enable-pretty-printing",
"ignoreFailures": true
}
],
"preLaunchTask": "build-fork"
},
{
"name": "Debug execlp",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/execlp",
"args": [],
"stopAtEntry": false,
"cwd": "${workspaceFolder}",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"setupCommands": [
{
"description": "Enable pretty-printing for gdb",
"text": "-enable-pretty-printing",
"ignoreFailures": true
}
],
"preLaunchTask": "build-execlp"
},
{
"name": "Debug All",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/fork", // 默认调试fork
"args": [],
"stopAtEntry": false,
"cwd": "${workspaceFolder}",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"setupCommands": [
{
"description": "Enable pretty-printing for gdb",
"text": "-enable-pretty-printing",
"ignoreFailures": true
}
],
"preLaunchTask": "build-all"
}
]
}

35
.vscode/tasks.json vendored Normal file
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@@ -0,0 +1,35 @@
{
"version": "2.0.0",
"tasks": [
{
"label": "build-fork",
"type": "shell",
"command": "make",
"args": ["fork"],
"group": "build",
"problemMatcher": ["$gcc"]
},
{
"label": "build-execlp",
"type": "shell",
"command": "make",
"args": ["execlp"],
"group": "build",
"problemMatcher": ["$gcc"]
},
{
"label": "build-all",
"type": "shell",
"command": "make",
"group": "build",
"problemMatcher": ["$gcc"]
},
{
"label": "clean",
"type": "shell",
"command": "make",
"args": ["clean"],
"group": "build"
}
]
}

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@@ -2,28 +2,54 @@
# Makefile for base example
#
include ./make.h
# 目标和源文件
TARGETS = fork execlp
SOURCES = $(wildcard $(SRC_DIR)/*.c) # 找到所有的 .c 文件
OBJECTS = $(patsubst $(SRC_DIR)/%.c,%.o,$(SOURCES)) # 将 .c 替换为 .o
# 默认目标
all: $(TARGETS)
# 调试标志
DEBUG_FLAGS = -g -O0
CFLAGS += $(DEBUG_FLAGS) # 确保包含调试信息
# 链接目标文件生成可执行文件
# 默认目标
all: $(TARGETS)
# 调试目标与preLaunchTask对应
debug: CFLAGS += -DDEBUG -Wall -Wextra
debug: $(TARGETS)
# 链接目标文件生成可执行文件
fork: fork.o
$(CC) -o fork fork.o
execlp: execlp.o
$(CC) -o execlp execlp.o
# 从 .c 文件编译生成 .o 文件
# 从 .c 文件编译生成 .o 文件
%.o: $(SRC_DIR)/%.c
$(CC) $(CFLAGS) $(COMMON_INCLUDE_DIRS) -c $< -o $@
# 清理目标
clean:
$(RM) -f $(TARGETS) $(OBJECTS)
$(RM) -f $(TARGETS) $(OBJECTS) *.o
# 运行目标
run-fork: fork
./fork
run-execlp: execlp
./execlp
# GDB调试目标
gdb-fork: fork
gdb ./fork
gdb-execlp: execlp
gdb ./execlp
# 安装目录结构(如果需要)
install-dirs:
mkdir -p $(SRC_DIR) $(BUILD_DIR)
.PHONY: all debug clean run-fork run-execlp gdb-fork gdb-execlp install-dirs

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@@ -3,29 +3,37 @@
#include <unistd.h>
#include <sys/wait.h>
int main(int argc, char * argv[])
int main(int argc, char *argv[])
{
int pid;
/* fork another process */
pid = fork();
if (pid<0)
{
/* error occurred */
fprintf(stderr,"Fork Failed!");
exit(-1);
}
else if (pid==0)
{
/* child process */
execlp("/bin/ls","ls",NULL);
}
else
{
/* parent process */
/* parent will wait for the child to complete*/
wait(NULL);
printf("Child Complete!");
exit(0);
}
}
(void)argc; // 明确标记未使用
(void)argv; // 消除编译器警告
pid_t pid = fork(); // 使用pid_t类型更规范
if (pid < 0) {
/* 错误处理 */
perror("Fork Failed");
exit(EXIT_FAILURE); // 使用标准失败码
}
else if (pid == 0) {
/* 子进程 */
execlp("/bin/ls", "ls", (char *)NULL); // 确保NULL转换为(char *)
// 如果exec失败才会执行到这里
perror("Exec Failed");
exit(EXIT_FAILURE);
}
else {
/* 父进程 */
int status;
wait(&status); // 获取子进程退出状态
if (WIFEXITED(status)) {
printf("Child Completed with status: %d\n", WEXITSTATUS(status));
} else {
printf("Child terminated abnormally\n");
}
exit(EXIT_SUCCESS); // 使用标准成功码
}
}