// File: /workspace/github_c_makefile_star2_O1/nilyang[P]redis-tdd-annotation/src/redis.c
// Function: main
int main(int argc, char **argv) {
    struct timeval tv;

    /* We need to initialize our libraries, and the server configuration. */
    // 初始化库
#ifdef INIT_SETPROCTITLE_REPLACEMENT
    spt_init(argc, argv);
#endif
    setlocale(LC_COLLATE,"");
    zmalloc_enable_thread_safeness();
    zmalloc_set_oom_handler(redisOutOfMemoryHandler);
    srand(time(NULL)^getpid());
    gettimeofday(&tv,NULL);
    dictSetHashFunctionSeed(tv.tv_sec^tv.tv_usec^getpid());

    // 检查服务器是否以 Sentinel 模式启动
    server.sentinel_mode = checkForSentinelMode(argc,argv);

    // 初始化服务器
    initServerConfig();

    /* We need to init sentinel right now as parsing the configuration file
     * in sentinel mode will have the effect of populating the sentinel
     * data structures with master nodes to monitor. */
    // 如果服务器以 Sentinel 模式启动，那么进行 Sentinel 功能相关的初始化
    // 并为要监视的主服务器创建一些相应的数据结构
    if (server.sentinel_mode) {
        initSentinelConfig();
        initSentinel();
    }

    // 检查用户是否指定了配置文件，或者配置选项
    if (argc >= 2) {
        int j = 1; /* First option to parse in argv[] */
        sds options = sdsempty();
        char *configfile = NULL;

        /* Handle special options --help and --version */
        // 处理特殊选项 -h 、-v 和 --test-memory
        if (strcmp(argv[1], "-v") == 0 ||
            strcmp(argv[1], "--version") == 0) version();
        if (strcmp(argv[1], "--help") == 0 ||
            strcmp(argv[1], "-h") == 0) usage();
        if (strcmp(argv[1], "--test-memory") == 0) {
            if (argc == 3) {
                memtest(atoi(argv[2]),50);
                exit(0);
            } else {
                fprintf(stderr,"Please specify the amount of memory to test in megabytes.\n");
                fprintf(stderr,"Example: ./redis-server --test-memory 4096\n\n");
                exit(1);
            }
        }

        /* First argument is the config file name? */
        // 如果第一个参数（argv[1]）不是以 "--" 开头
        // 那么它应该是一个配置文件
        if (argv[j][0] != '-' || argv[j][1] != '-')
            configfile = argv[j++];

        /* All the other options are parsed and conceptually appended to the
         * configuration file. For instance --port 6380 will generate the
         * string "port 6380\n" to be parsed after the actual file name
         * is parsed, if any. */
        // 对用户给定的其余选项进行分析，并将分析所得的字符串追加稍后载入的配置文件的内容之后
        // 比如 --port 6380 会被分析为 "port 6380\n"
        while(j != argc) {
            if (argv[j][0] == '-' && argv[j][1] == '-') {
                /* Option name */
                if (sdslen(options)) options = sdscat(options,"\n");
                options = sdscat(options,argv[j]+2);
                options = sdscat(options," ");
            } else {
                /* Option argument */
                options = sdscatrepr(options,argv[j],strlen(argv[j]));
                options = sdscat(options," ");
            }
            j++;
        }
        if (configfile) server.configfile = getAbsolutePath(configfile);
        // 重置保存条件
        resetServerSaveParams();

        // 载入配置文件， options 是前面分析出的给定选项
        loadServerConfig(configfile,options);
        sdsfree(options);

        // 获取配置文件的绝对路径
        if (configfile) server.configfile = getAbsolutePath(configfile);
    } else {
        redisLog(REDIS_WARNING, "Warning: no config file specified, using the default config. In order to specify a config file use %s /path/to/%s.conf", argv[0], server.sentinel_mode ? "sentinel" : "redis");
    }

    // 将服务器设置为守护进程
    if (server.daemonize) daemonize();

    // 创建并初始化服务器数据结构
    initServer();

    // 如果服务器是守护进程，那么创建 PID 文件
    if (server.daemonize) createPidFile();

    // 为服务器进程设置名字
    redisSetProcTitle(argv[0]);

    // 打印 ASCII LOGO
    redisAsciiArt();

    // 如果服务器不是运行在 SENTINEL 模式，那么执行以下代码
    if (!server.sentinel_mode) {
        /* Things not needed when running in Sentinel mode. */
        // 打印问候语
        redisLog(REDIS_WARNING,"Server started, Redis version " REDIS_VERSION);
    #ifdef __linux__
        // 打印内存警告
        linuxOvercommitMemoryWarning();
    #endif
        // 从 AOF 文件或者 RDB 文件中载入数据
        loadDataFromDisk();
        // 启动集群？
        if (server.cluster_enabled) {
            if (verifyClusterConfigWithData() == REDIS_ERR) {
                redisLog(REDIS_WARNING,
                    "You can't have keys in a DB different than DB 0 when in "
                    "Cluster mode. Exiting.");
                exit(1);
            }
        }
        // 打印 TCP 端口
        if (server.ipfd_count > 0)
            redisLog(REDIS_NOTICE,"The server is now ready to accept connections on port %d", server.port);
        // 打印本地套接字端口
        if (server.sofd > 0)
            redisLog(REDIS_NOTICE,"The server is now ready to accept connections at %s", server.unixsocket);
    } else {
        sentinelIsRunning();
    }

    /* Warning the user about suspicious maxmemory setting. */
    // 检查不正常的 maxmemory 配置
    if (server.maxmemory > 0 && server.maxmemory < 1024*1024) {
        redisLog(REDIS_WARNING,"WARNING: You specified a maxmemory value that is less than 1MB (current value is %llu bytes). Are you sure this is what you really want?", server.maxmemory);
    }

    // 运行事件处理器，一直到服务器关闭为止
    aeSetBeforeSleepProc(server.el,beforeSleep);
    aeMain(server.el);

    // 服务器关闭，停止事件循环
    aeDeleteEventLoop(server.el);

    return 0;
}

// Assembly:
pushq %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
subq $0x18, %rsp
movq %rsi, %rbx
movl %edi, %ebp
callq 0x60a14
leaq 0x6f53f(%rip), %rsi     # 0x972e1
movl $0x3, %edi
callq 0x1fac0
callq 0x298c6
leaq -0xc9(%rip), %rdi       # 0x27cef
callq 0x298ce
xorl %edi, %edi
callq 0x1fc50
movq %rax, %r14
callq 0x1f410
xorl %eax, %r14d
movl %r14d, %edi
callq 0x1f8f0
leaq 0x8(%rsp), %r14
movq %r14, %rdi
xorl %esi, %esi
callq 0x1f2f0
movl 0x8(%r14), %r15d
xorl (%r14), %r15d
callq 0x1f410
xorl %eax, %r15d
movl %r15d, %edi
callq 0x21eca
movl %ebp, %edi
movq %rbx, %rsi
callq 0x27b96
movl %eax, 0xa221f(%rip)     # 0xca02c
callq 0x248c7
cmpl $0x0, 0xa2213(%rip)     # 0xca02c
je 0x27e25
callq 0x5b3d0
callq 0x5b3e2
cmpl $0x2, %ebp
jl 0x27ecc
callq 0x281b2
movq %rax, %r14
movq 0x8(%rbx), %r15
leaq 0x6ea0d(%rip), %rsi     # 0x9684e
movq %r15, %rdi
callq 0x1f880
testl %eax, %eax
je 0x280f7
leaq 0x6e9f9(%rip), %rsi     # 0x96851
movq %r15, %rdi
callq 0x1f880
testl %eax, %eax
je 0x280f7
movq 0x8(%rbx), %r15
leaq 0x6e9e8(%rip), %rsi     # 0x9685b
movq %r15, %rdi
callq 0x1f880
testl %eax, %eax
je 0x280fc
leaq 0x6e9d8(%rip), %rsi     # 0x96862
movq %r15, %rdi
callq 0x1f880
testl %eax, %eax
je 0x280fc
movq 0x8(%rbx), %r15
leaq 0x6e9c0(%rip), %rsi     # 0x96865
movq %r15, %rdi
callq 0x1f880
testl %eax, %eax
je 0x28101
cmpb $0x2d, (%r15)
jne 0x27f00
cmpb $0x2d, 0x1(%r15)
jne 0x27f00
movl $0x1, %eax
xorl %r15d, %r15d
jmp 0x27f05
movq (%rbx), %rdx
cmpl $0x0, 0xa2156(%rip)     # 0xca02c
leaq 0x6ce24(%rip), %rax     # 0x94d01
leaq 0x77786(%rip), %rcx     # 0x9f66a
cmoveq %rax, %rcx
leaq 0x6e9ec(%rip), %rsi     # 0x968db
movl $0x3, %edi
xorl %eax, %eax
callq 0x23064
jmp 0x27fde
movl $0x2, %eax
movq %r15, (%rsp)
cmpl %ebp, %eax
je 0x27f81
movl %eax, %r12d
movl %ebp, %r15d
leaq 0x724ad(%rip), %r13     # 0x9a3c7
movq (%rbx,%r12,8), %rbp
cmpb $0x2d, (%rbp)
jne 0x27f55
cmpb $0x2d, 0x1(%rbp)
jne 0x27f55
cmpl $0x0, -0x8(%r14)
je 0x27f43
movq %r14, %rdi
leaq 0x6e806(%rip), %rsi     # 0x96741
callq 0x283d7
movq %rax, %r14
movq (%rbx,%r12,8), %rsi
addq $0x2, %rsi
movq %r14, %rdi
callq 0x283d7
jmp 0x27f6b
movq %rbp, %rdi
callq 0x1f4f0
movq %r14, %rdi
movq %rbp, %rsi
movq %rax, %rdx
callq 0x28f45
movq %rax, %rdi
movq %r13, %rsi
callq 0x283d7
movq %rax, %r14
incq %r12
cmpq %r12, %r15
jne 0x27f1a
movq (%rsp), %r15
testq %r15, %r15
je 0x27fc4
movq %r15, %rdi
callq 0x30191
movq %rax, 0xa200f(%rip)     # 0xc9fa8
xorl %eax, %eax
callq 0x43972
movq %r15, %rdi
movq %r14, %rsi
callq 0x45370
movq %r14, %rdi
callq 0x28204
movq %r15, %rdi
callq 0x30191
movq %rax, 0xa1fe6(%rip)     # 0xc9fa8
jmp 0x27fde
xorl %eax, %eax
callq 0x43972
movq %r15, %rdi
movq %r14, %rsi
callq 0x45370
movq %r14, %rdi
callq 0x28204
cmpl $0x0, 0xa2447(%rip)     # 0xca42c
je 0x27fec
callq 0x278a1
callq 0x252d1
cmpl $0x0, 0xa2434(%rip)     # 0xca42c
je 0x27fff
callq 0x27862
movq (%rbx), %rdi
callq 0x27d28
callq 0x27ab1
cmpl $0x0, 0xa2019(%rip)     # 0xca02c
je 0x2801c
callq 0x5b4ac
jmp 0x28095
leaq 0x6e92f(%rip), %rsi     # 0x96952
movl $0x3, %edi
xorl %eax, %eax
callq 0x23064
callq 0x27842
callq 0x27bff
cmpl $0x0, 0xa2724(%rip)     # 0xca764
je 0x28050
callq 0x543f7
cmpl $-0x1, %eax
je 0x28128
cmpl $0x0, 0xa20b5(%rip)     # 0xca10c
jle 0x28072
movl 0xa1fd1(%rip), %edx     # 0xca030
leaq 0x6e960(%rip), %rsi     # 0x969c6
movl $0x2, %edi
xorl %eax, %eax
callq 0x23064
cmpl $0x0, 0xa2097(%rip)     # 0xca110
jle 0x28095
movq 0xa203e(%rip), %rdx     # 0xca0c0
leaq 0x6e976(%rip), %rsi     # 0x969ff
movl $0x2, %edi
xorl %eax, %eax
callq 0x23064
movq 0xa262c(%rip), %rdx     # 0xca6c8
leaq -0x1(%rdx), %rax
cmpq $0xffffe, %rax          # imm = 0xFFFFE
ja 0x280bb
leaq 0x6e984(%rip), %rsi     # 0x96a33
movl $0x3, %edi
xorl %eax, %eax
callq 0x23064
movq 0xa1f0e(%rip), %rdi     # 0xc9fd0
leaq -0x3eb4(%rip), %rsi     # 0x24215
callq 0x2111a
movq 0xa1efb(%rip), %rdi     # 0xc9fd0
callq 0x210e4
movq 0xa1eef(%rip), %rdi     # 0xc9fd0
callq 0x2098a
xorl %eax, %eax
addq $0x18, %rsp
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
retq
callq 0x27903
callq 0x2795a
cmpl $0x3, %ebp
jne 0x28123
movq 0x10(%rbx), %rdi
callq 0x1f710
movslq %eax, %rdi
movl $0x32, %esi
callq 0x5998f
xorl %edi, %edi
callq 0x1f2b0
callq 0x1fca0
leaq 0x6e848(%rip), %rsi     # 0x96977
movl $0x3, %edi
xorl %eax, %eax
callq 0x23064
movl $0x1, %edi
callq 0x1f2b0
nopl (%rax)