Add libhv and test http client

vendor/libhv/include/hv/hmain.h

@@ -0,0 +1,117 @@
+#ifndef HV_MAIN_H_
+#define HV_MAIN_H_
+
+#include "hexport.h"
+#include "hplatform.h"
+#include "hdef.h"
+#include "hproc.h"
+
+#ifdef _MSC_VER
+#pragma comment(lib, "winmm.lib") // for timeSetEvent
+#endif
+
+BEGIN_EXTERN_C
+
+typedef struct main_ctx_s {
+    char    run_dir[MAX_PATH];
+    char    program_name[MAX_PATH];
+
+    char    confile[MAX_PATH]; // default etc/${program}.conf
+    char    pidfile[MAX_PATH]; // default logs/${program}.pid
+    char    logfile[MAX_PATH]; // default logs/${program}.log
+
+    pid_t   pid;    // getpid
+    pid_t   oldpid; // getpid_from_pidfile
+
+    // arg
+    int     argc;
+    int     arg_len;
+    char**  os_argv;
+    char**  save_argv;
+    char*   cmdline;
+    // parsed arg
+    int     arg_kv_size;
+    char**  arg_kv;
+    int     arg_list_size;
+    char**  arg_list;
+
+    // env
+    int     envc;
+    int     env_len;
+    char**  os_envp;
+    char**  save_envp;
+
+    // signals
+    procedure_t     reload_fn;
+    void*           reload_userdata;
+    // master workers model
+    int             worker_processes;
+    int             worker_threads;
+    procedure_t     worker_fn;
+    void*           worker_userdata;
+    proc_ctx_t*     proc_ctxs;
+} main_ctx_t;
+
+// arg_type
+#define NO_ARGUMENT         0
+#define REQUIRED_ARGUMENT   1
+#define OPTIONAL_ARGUMENT   2
+// option define
+#define OPTION_PREFIX   '-'
+#define OPTION_DELIM    '='
+#define OPTION_ENABLE   "1"
+#define OPTION_DISABLE  "0"
+typedef struct option_s {
+    char        short_opt;
+    const char* long_opt;
+    int         arg_type;
+} option_t;
+
+HV_EXPORT int  main_ctx_init(int argc, char** argv);
+HV_EXPORT void main_ctx_free(void);
+
+// ls -a -l
+// ls -al
+// watch -n 10 ls
+// watch -n10 ls
+HV_EXPORT int parse_opt(int argc, char** argv, const char* opt);
+// gcc -g -Wall -O3 -std=cpp main.c
+HV_EXPORT int parse_opt_long(int argc, char** argv, const option_t* long_options, int size);
+HV_EXPORT const char* get_arg(const char* key);
+HV_EXPORT const char* get_env(const char* key);
+
+#if defined(OS_UNIX) && !HAVE_SETPROCTITLE
+HV_EXPORT void setproctitle(const char* fmt, ...);
+#endif
+
+// pidfile
+HV_EXPORT int   create_pidfile();
+HV_EXPORT void  delete_pidfile(void);
+HV_EXPORT pid_t getpid_from_pidfile();
+
+// signal=[start,stop,restart,status,reload]
+HV_EXPORT int  signal_init(procedure_t reload_fn DEFAULT(NULL), void* reload_userdata DEFAULT(NULL));
+HV_EXPORT void signal_handle(const char* signal);
+#ifdef OS_UNIX
+// we use SIGTERM to quit process, SIGUSR1 to reload confile
+#define SIGNAL_TERMINATE    SIGTERM
+#define SIGNAL_RELOAD       SIGUSR1
+void signal_handler(int signo);
+#endif
+
+// global var
+#define DEFAULT_WORKER_PROCESSES    4
+#define MAXNUM_WORKER_PROCESSES     256
+HV_EXPORT extern main_ctx_t   g_main_ctx;
+
+// master-workers processes
+HV_EXPORT int master_workers_run(
+        procedure_t worker_fn,
+        void* worker_userdata DEFAULT(NULL),
+        int worker_processes DEFAULT(DEFAULT_WORKER_PROCESSES),
+        int worker_threads DEFAULT(0),
+        bool wait DEFAULT(true));
+
+END_EXTERN_C
+
+#endif // HV_MAIN_H_