/*
   Copyright (c) 2000, 2012, Oracle and/or its affiliates
   Copyright (c) 2009, 2011, Monty Program Ab

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */

#include "mysys_priv.h"
#include "my_static.h"
#include "mysys_err.h"
#include <m_string.h>
#include <m_ctype.h>
#include <signal.h>
#include <mysql/psi/mysql_stage.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef _WIN32
#ifdef _MSC_VER
#include <locale.h>
#include <crtdbg.h>
/* WSAStartup needs winsock library*/
#pragma comment(lib, "ws2_32")
#endif
static void my_win_init(void);
static my_bool win32_init_tcp_ip();
#else
#define my_win_init()
#endif

#if defined(_SC_PAGE_SIZE) && !defined(_SC_PAGESIZE)
#define _SC_PAGESIZE _SC_PAGE_SIZE
#endif

extern pthread_key(struct st_my_thread_var*, THR_KEY_mysys);

#define SCALE_SEC       100
#define SCALE_USEC      10000

my_bool my_init_done= 0;
uint	mysys_usage_id= 0;              /* Incremented for each my_init() */
size_t  my_system_page_size= 8192;	/* Default if no sysconf() */

ulonglong   my_thread_stack_size= (sizeof(void*) <= 4)? 65536: ((256-16)*1024);

static ulong atoi_octal(const char *str)
{
  long int tmp;
  while (*str && my_isspace(&my_charset_latin1, *str))
    str++;
  str2int(str,
	  (*str == '0' ? 8 : 10),       /* Octalt or decimalt */
	  0, INT_MAX, &tmp);
  return (ulong) tmp;
}

MYSQL_FILE *mysql_stdin= NULL;
static MYSQL_FILE instrumented_stdin;

/**
  Initialize my_sys functions, resources and variables

  @return Initialization result
    @retval 0 Success
    @retval 1 Error. Couldn't initialize environment
*/
my_bool my_init(void)
{
  char *str;

  if (my_init_done)
    return 0;

  my_init_done= 1;

  mysys_usage_id++;
  my_umask= 0660;                       /* Default umask for new files */
  my_umask_dir= 0700;                   /* Default umask for new directories */
  my_global_flags= 0;
#ifdef _SC_PAGESIZE
  my_system_page_size= sysconf(_SC_PAGESIZE);
#endif

  /* Default creation of new files */
  if ((str= getenv("UMASK")) != 0)
    my_umask= (int) (atoi_octal(str) | 0600);
  /* Default creation of new dir's */
  if ((str= getenv("UMASK_DIR")) != 0)
    my_umask_dir= (int) (atoi_octal(str) | 0700);

  init_glob_errs();

  instrumented_stdin.m_file= stdin;
  instrumented_stdin.m_psi= NULL;       /* not yet instrumented */
  mysql_stdin= & instrumented_stdin;

  my_progname_short= "unknown";
  if (my_progname)
    my_progname_short= my_progname + dirname_length(my_progname);

  /* Initialize our mutex handling */
  my_mutex_init();

  if (my_thread_global_init())
    return 1;

#if defined(SAFEMALLOC) && !defined(DBUG_OFF)
  dbug_sanity= sf_sanity;
#endif

  /* $HOME is needed early to parse configuration files located in ~/ */
  if ((home_dir= getenv("HOME")) != 0)
    home_dir= intern_filename(home_dir_buff, home_dir);

  {
    DBUG_ENTER("my_init");
    DBUG_PROCESS((char*) (my_progname ? my_progname : "unknown"));
    my_time_init();
    my_win_init();
    DBUG_PRINT("exit", ("home: '%s'", home_dir));
#ifdef _WIN32
    if (win32_init_tcp_ip())
      DBUG_RETURN(1);
#endif
#ifdef CHECK_UNLIKELY
    init_my_likely();
#endif
    DBUG_RETURN(0);
  }
} /* my_init */


	/* End my_sys */

void my_end(int infoflag)
{
  /*
    this code is suboptimal to workaround a bug in
    Sun CC: Sun C++ 5.6 2004/06/02 for x86, and should not be
    optimized until this compiler is not in use anymore
  */
  FILE *info_file= DBUG_FILE;
  my_bool print_info= (info_file != stderr);

  if (!my_init_done)
    return;

  /*
    We do not use DBUG_ENTER here, as after cleanup DBUG is no longer
    operational, so we cannot use DBUG_RETURN.
  */
  DBUG_PRINT("info",("Shutting down: infoflag: %d  print_info: %d",
                     infoflag, print_info));
  if (!info_file)
  {
    info_file= stderr;
    print_info= 0;
  }

  if ((infoflag & MY_CHECK_ERROR) || print_info)
  {                                     /* Test if some file is left open */
    char ebuff[512];
    uint i, open_files, open_streams;

    for (open_streams= open_files= i= 0 ; i < my_file_limit ; i++)
    {
      if (my_file_info[i].type == UNOPEN)
        continue;
      if (my_file_info[i].type == STREAM_BY_FOPEN ||
          my_file_info[i].type == STREAM_BY_FDOPEN)
        open_streams++;
      else
        open_files++;

#ifdef EXTRA_DEBUG
      fprintf(stderr, EE(EE_FILE_NOT_CLOSED), my_file_info[i].name, i);
      fputc('\n', stderr);
#endif
    }
    if (open_files || open_streams)
    {
      my_snprintf(ebuff, sizeof(ebuff), EE(EE_OPEN_WARNING),
                  open_files, open_streams);
      my_message_stderr(EE_OPEN_WARNING, ebuff, ME_BELL);
      DBUG_PRINT("error", ("%s", ebuff));
    }

#ifdef CHECK_UNLIKELY
    end_my_likely(info_file);
#endif
  }
  free_charsets();
  my_error_unregister_all();
  my_once_free();

  if ((infoflag & MY_GIVE_INFO) || print_info)
  {
#ifdef HAVE_GETRUSAGE
    struct rusage rus;
#ifdef HAVE_valgrind
    /* Purify assumes that rus is uninitialized after getrusage call */
    bzero((char*) &rus, sizeof(rus));
#endif
    if (!getrusage(RUSAGE_SELF, &rus))
      fprintf(info_file,"\n\
User time %.2f, System time %.2f\n\
Maximum resident set size %ld, Integral resident set size %ld\n\
Non-physical pagefaults %ld, Physical pagefaults %ld, Swaps %ld\n\
Blocks in %ld out %ld, Messages in %ld out %ld, Signals %ld\n\
Voluntary context switches %ld, Involuntary context switches %ld\n",
	      (rus.ru_utime.tv_sec * SCALE_SEC +
	       rus.ru_utime.tv_usec / SCALE_USEC) / 100.0,
	      (rus.ru_stime.tv_sec * SCALE_SEC +
	       rus.ru_stime.tv_usec / SCALE_USEC) / 100.0,
	      rus.ru_maxrss, rus.ru_idrss,
	      rus.ru_minflt, rus.ru_majflt,
	      rus.ru_nswap, rus.ru_inblock, rus.ru_oublock,
	      rus.ru_msgsnd, rus.ru_msgrcv, rus.ru_nsignals,
	      rus.ru_nvcsw, rus.ru_nivcsw);
#endif
#if defined(_MSC_VER)
   _CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE );
   _CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR );
   _CrtSetReportMode( _CRT_ERROR, _CRTDBG_MODE_FILE );
   _CrtSetReportFile( _CRT_ERROR, _CRTDBG_FILE_STDERR );
   _CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE );
   _CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDERR );
   _CrtCheckMemory();
#endif
  }

  my_thread_end();
  my_thread_global_end();

  if (!(infoflag & MY_DONT_FREE_DBUG))
    DBUG_END();                /* Must be done as late as possible */

  my_mutex_end();
#if defined(SAFE_MUTEX)
  /*
    Check on destroying of mutexes. A few may be left that will get cleaned
    up by C++ destructors
  */
  safe_mutex_end((infoflag & (MY_GIVE_INFO | MY_CHECK_ERROR)) ? stderr :
                 (FILE *) 0);
#endif /* defined(SAFE_MUTEX) */

#ifdef _WIN32
   WSACleanup();
#endif
 
  /* At very last, delete mysys key, it is used everywhere including DBUG */
  pthread_key_delete(THR_KEY_mysys);
  my_init_done= my_thr_key_mysys_exists= 0;
} /* my_end */

#ifdef DBUG_ASSERT_EXISTS
/* Dummy tag function for debugging */

void my_debug_put_break_here(void)
{
}
#endif

#ifdef _WIN32


/*
  my_parameter_handler
  
  Invalid parameter handler we will use instead of the one "baked"
  into the CRT.
*/

void my_parameter_handler(const wchar_t * expression, const wchar_t * function,
                          const wchar_t * file, unsigned int line,
                          uintptr_t pReserved)
{
  __debugbreak();
}


#ifdef __MSVC_RUNTIME_CHECKS
#include <rtcapi.h>

/* Turn off runtime checks for 'handle_rtc_failure' */
#pragma runtime_checks("", off)

/*
  handle_rtc_failure
  Catch the RTC error and dump it to stderr
*/

int handle_rtc_failure(int err_type, const char *file, int line,
                       const char* module, const char *format, ...)
{
  va_list args;
  va_start(args, format);
  fprintf(stderr, "Error:");
  vfprintf(stderr, format, args);
  fprintf(stderr, " At %s:%d\n", file, line);
  va_end(args);
  (void) fflush(stderr);
  __debugbreak();

  return 0; /* Error is handled */
}
#pragma runtime_checks("", restore)
#endif


static void my_win_init(void)
{
  DBUG_ENTER("my_win_init");

#if defined(_MSC_VER)
  _set_invalid_parameter_handler(my_parameter_handler);
#endif

#ifdef __MSVC_RUNTIME_CHECKS
  /*
    Install handler to send RTC (Runtime Error Check) warnings
    to log file
  */
  _RTC_SetErrorFunc(handle_rtc_failure);
#endif

  _tzset();

  DBUG_VOID_RETURN;
}


static my_bool win32_init_tcp_ip()
{
  WORD wVersionRequested = MAKEWORD( 2, 2 );
  WSADATA wsaData;
  if (WSAStartup(wVersionRequested, &wsaData))
  {
    fprintf(stderr, "WSAStartup() failed with error: %d\n", WSAGetLastError());
    return 1;
  }
  return(0);
}
#endif /* _WIN32 */

PSI_stage_info stage_waiting_for_table_level_lock=
{0, "Waiting for table level lock", 0};

#ifdef HAVE_PSI_INTERFACE
#if !defined(HAVE_PREAD) && !defined(_WIN32)
PSI_mutex_key key_my_file_info_mutex;
#endif /* !defined(HAVE_PREAD) && !defined(_WIN32) */

#if !defined(HAVE_LOCALTIME_R) || !defined(HAVE_GMTIME_R)
PSI_mutex_key key_LOCK_localtime_r;
#endif /* !defined(HAVE_LOCALTIME_R) || !defined(HAVE_GMTIME_R) */

PSI_mutex_key key_BITMAP_mutex, key_IO_CACHE_append_buffer_lock,
  key_IO_CACHE_SHARE_mutex, key_KEY_CACHE_cache_lock,
  key_LOCK_alarm, key_LOCK_timer,
  key_my_thread_var_mutex, key_THR_LOCK_charset, key_THR_LOCK_heap,
  key_THR_LOCK_lock, key_THR_LOCK_malloc,
  key_THR_LOCK_mutex, key_THR_LOCK_myisam, key_THR_LOCK_net,
  key_THR_LOCK_open, key_THR_LOCK_threads,
  key_TMPDIR_mutex, key_THR_LOCK_myisam_mmap, key_LOCK_uuid_generator;

static PSI_mutex_info all_mysys_mutexes[]=
{
#if !defined(HAVE_PREAD) && !defined(_WIN32)
  { &key_my_file_info_mutex, "st_my_file_info:mutex", 0},
#endif /* !defined(HAVE_PREAD) && !defined(_WIN32) */
#if !defined(HAVE_LOCALTIME_R) || !defined(HAVE_GMTIME_R)
  { &key_LOCK_localtime_r, "LOCK_localtime_r", PSI_FLAG_GLOBAL},
#endif /* !defined(HAVE_LOCALTIME_R) || !defined(HAVE_GMTIME_R) */
  { &key_BITMAP_mutex, "BITMAP::mutex", 0},
  { &key_IO_CACHE_append_buffer_lock, "IO_CACHE::append_buffer_lock", 0},
  { &key_IO_CACHE_SHARE_mutex, "IO_CACHE::SHARE_mutex", 0},
  { &key_KEY_CACHE_cache_lock, "KEY_CACHE::cache_lock", 0},
  { &key_LOCK_alarm, "LOCK_alarm", PSI_FLAG_GLOBAL},
  { &key_LOCK_timer, "LOCK_timer", PSI_FLAG_GLOBAL},
  { &key_my_thread_var_mutex, "my_thread_var::mutex", 0},
  { &key_THR_LOCK_charset, "THR_LOCK_charset", PSI_FLAG_GLOBAL},
  { &key_THR_LOCK_heap, "THR_LOCK_heap", PSI_FLAG_GLOBAL},
  { &key_THR_LOCK_lock, "THR_LOCK_lock", PSI_FLAG_GLOBAL},
  { &key_THR_LOCK_malloc, "THR_LOCK_malloc", PSI_FLAG_GLOBAL},
  { &key_THR_LOCK_mutex, "THR_LOCK::mutex", 0},
  { &key_THR_LOCK_myisam, "THR_LOCK_myisam", PSI_FLAG_GLOBAL},
  { &key_THR_LOCK_net, "THR_LOCK_net", PSI_FLAG_GLOBAL},
  { &key_THR_LOCK_open, "THR_LOCK_open", PSI_FLAG_GLOBAL},
  { &key_THR_LOCK_threads, "THR_LOCK_threads", PSI_FLAG_GLOBAL},
  { &key_TMPDIR_mutex, "TMPDIR_mutex", PSI_FLAG_GLOBAL},
  { &key_THR_LOCK_myisam_mmap, "THR_LOCK_myisam_mmap", PSI_FLAG_GLOBAL},
  { &key_LOCK_uuid_generator, "LOCK_uuid_generator", PSI_FLAG_GLOBAL }
};

PSI_cond_key key_COND_alarm, key_COND_timer, key_IO_CACHE_SHARE_cond,
  key_IO_CACHE_SHARE_cond_writer, key_my_thread_var_suspend,
  key_THR_COND_threads, key_WT_RESOURCE_cond;

static PSI_cond_info all_mysys_conds[]=
{
  { &key_COND_alarm, "COND_alarm", PSI_FLAG_GLOBAL},
  { &key_COND_timer, "COND_timer", PSI_FLAG_GLOBAL},
  { &key_IO_CACHE_SHARE_cond, "IO_CACHE_SHARE::cond", 0},
  { &key_IO_CACHE_SHARE_cond_writer, "IO_CACHE_SHARE::cond_writer", 0},
  { &key_my_thread_var_suspend, "my_thread_var::suspend", 0},
  { &key_THR_COND_threads, "THR_COND_threads", PSI_FLAG_GLOBAL},
  { &key_WT_RESOURCE_cond, "WT_RESOURCE::cond", 0}
};

PSI_rwlock_key key_SAFEHASH_mutex;

static PSI_rwlock_info all_mysys_rwlocks[]=
{
  { &key_SAFEHASH_mutex, "SAFE_HASH::mutex", 0}
};

#ifdef USE_ALARM_THREAD
PSI_thread_key key_thread_alarm;
#endif
PSI_thread_key key_thread_timer;

static PSI_thread_info all_mysys_threads[]=
{
#ifdef USE_ALARM_THREAD
  { &key_thread_alarm, "alarm", PSI_FLAG_GLOBAL},
#endif
  { &key_thread_timer, "statement_timer", PSI_FLAG_GLOBAL}
};


PSI_file_key key_file_charset, key_file_cnf;

static PSI_file_info all_mysys_files[]=
{
  { &key_file_charset, "charset", 0},
  { &key_file_cnf, "cnf", 0}
};

PSI_stage_info *all_mysys_stages[]=
{
  & stage_waiting_for_table_level_lock
};

void my_init_mysys_psi_keys()
{
  const char* category= "mysys";
  int count;

  count= sizeof(all_mysys_mutexes)/sizeof(all_mysys_mutexes[0]);
  mysql_mutex_register(category, all_mysys_mutexes, count);

  count= sizeof(all_mysys_conds)/sizeof(all_mysys_conds[0]);
  mysql_cond_register(category, all_mysys_conds, count);

  count= sizeof(all_mysys_rwlocks)/sizeof(all_mysys_rwlocks[0]);
  mysql_rwlock_register(category, all_mysys_rwlocks, count);

  count= sizeof(all_mysys_threads)/sizeof(all_mysys_threads[0]);
  mysql_thread_register(category, all_mysys_threads, count);

  count= sizeof(all_mysys_files)/sizeof(all_mysys_files[0]);
  mysql_file_register(category, all_mysys_files, count);

  count= array_elements(all_mysys_stages);
  mysql_stage_register(category, all_mysys_stages, count);
}
#endif /* HAVE_PSI_INTERFACE */

