From 882f16d0369b4cd0742ac37650a71fc6f3b00a57 Mon Sep 17 00:00:00 2001
From: unknown <jcole@tetra.spaceapes.com>
Date: Sat, 27 Jan 2001 03:24:05 -0600
Subject: Added --temp-pool option to mysqld.  This will cause temporary files
 created to use a small set of filenames, to try and avoid problems in the
 Linux kernel.

mysys/Makefile.am:
  Added my_bitmap.c
mysys/my_init.c:
  my_bitmap code added
mysys/mysys_priv.h:
  my_bitmap
sql/mysql_priv.h:
  temp pool stuff.
sql/mysqld.cc:
  --temp-pool option added
sql/sql_select.cc:
  temp pool stuff
sql/table.h:
  temp pool
---
 mysys/Makefile.am  |  2 +-
 mysys/my_bitmap.c  | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 mysys/my_init.c    | 10 ++++++++-
 mysys/mysys_priv.h |  1 +
 4 files changed, 71 insertions(+), 2 deletions(-)
 create mode 100644 mysys/my_bitmap.c

(limited to 'mysys')

diff --git a/mysys/Makefile.am b/mysys/Makefile.am
index 7615b85fa29..6674132bdca 100644
--- a/mysys/Makefile.am
+++ b/mysys/Makefile.am
@@ -44,7 +44,7 @@ libmysys_a_SOURCES =	my_init.c my_getwd.c mf_getdate.c\
 			my_quick.c my_lockmem.c my_static.c \
 			getopt.c getopt1.c getvar.c my_mkdir.c \
 			default.c my_compress.c checksum.c raid.cc my_net.c \
-			my_vsnprintf.c charset.c
+			my_vsnprintf.c charset.c my_bitmap.c
 EXTRA_DIST =		thr_alarm.c thr_lock.c my_pthread.c my_thr_init.c \
 			thr_mutex.c thr_rwlock.c
 libmysys_a_LIBADD =	@THREAD_LOBJECTS@
diff --git a/mysys/my_bitmap.c b/mysys/my_bitmap.c
new file mode 100644
index 00000000000..1434f472f98
--- /dev/null
+++ b/mysys/my_bitmap.c
@@ -0,0 +1,60 @@
+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library 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
+   Library General Public License for more details.
+   
+   You should have received a copy of the GNU Library General Public
+   License along with this library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA */
+
+/*
+  Handling of uchar arrays as large bitmaps.
+*/
+
+#include "mysys_priv.h"
+#include <my_bitmap.h>
+
+pthread_mutex_t LOCK_bitmap;
+
+void bitmap_set_bit(uchar *bitmap, uint bitmap_size, uint bitmap_bit) {
+  if((bitmap_bit != MY_BIT_NONE) && (bitmap_bit < bitmap_size*8)) {
+    pthread_mutex_lock(&LOCK_bitmap);
+    bitmap[bitmap_bit / 8] |= (1 << bitmap_bit % 8);
+    pthread_mutex_unlock(&LOCK_bitmap);
+  };
+};
+
+uint bitmap_set_next(uchar *bitmap, uint bitmap_size) {
+  uint bit_found = MY_BIT_NONE;
+  int i, b;
+
+  pthread_mutex_lock(&LOCK_bitmap);
+  for(i=0; (i<bitmap_size) && (bit_found==MY_BIT_NONE); i++) {
+    if(bitmap[i] == 0xff) continue;
+    for(b=0; (b<8) && (bit_found==MY_BIT_NONE); b++)
+      if((bitmap[i] & 1<<b) == 0) {
+        bit_found = (i*8)+b;
+        bitmap[i] |= 1<<b;
+      };
+  };
+  pthread_mutex_unlock(&LOCK_bitmap);
+
+  return bit_found;
+};
+
+void bitmap_clear_bit(uchar *bitmap, uint bitmap_size, uint bitmap_bit) {
+  if((bitmap_bit != MY_BIT_NONE) && (bitmap_bit < bitmap_size*8)) {
+    pthread_mutex_lock(&LOCK_bitmap);
+    bitmap[bitmap_bit / 8] &= ~(1 << bitmap_bit % 8);
+    pthread_mutex_unlock(&LOCK_bitmap);
+  };
+};
+
diff --git a/mysys/my_init.c b/mysys/my_init.c
index a9c8b49a257..384fab5d53c 100644
--- a/mysys/my_init.c
+++ b/mysys/my_init.c
@@ -48,6 +48,7 @@ static my_bool win32_init_tcp_ip();
 static my_bool my_init_done=0;
 
 
+
 static ulong atoi_octal(const char *str)
 {
   long int tmp;
@@ -76,6 +77,7 @@ void my_init(void)
 #ifndef __WIN__
   sigfillset(&my_signals);		/* signals blocked by mf_brkhant */
 #endif
+  pthread_mutex_init(&LOCK_bitmap, NULL);
 #endif
   {
     DBUG_ENTER("my_init");
@@ -127,7 +129,12 @@ void my_end(int infoflag)
 #ifdef HAVE_GETRUSAGE
     struct rusage rus;
     if (!getrusage(RUSAGE_SELF, &rus))
-      fprintf(info_file,"\nUser time %.2f, System time %.2f\nMaximum resident set size %ld, Integral resident set size %ld\nNon physical pagefaults %ld, Physical pagefaults %ld, Swaps %ld\nBlocks in %ld out %ld, Messages in %ld out %ld, Signals %ld\nVouluntary context switches %ld, Invouluntary context switches %ld\n",
+      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 +
@@ -159,6 +166,7 @@ void my_end(int infoflag)
   pthread_mutex_destroy(&THR_LOCK_keycache);
   pthread_mutex_destroy(&THR_LOCK_malloc);
   pthread_mutex_destroy(&THR_LOCK_open);
+  pthread_mutex_destroy(&LOCK_bitmap);
   DBUG_POP();				/* Must be done before my_thread_end */
   my_thread_end();
   my_thread_global_end();
diff --git a/mysys/mysys_priv.h b/mysys/mysys_priv.h
index 86c32202e99..20fda270658 100644
--- a/mysys/mysys_priv.h
+++ b/mysys/mysys_priv.h
@@ -25,6 +25,7 @@
 #ifdef THREAD
 extern pthread_mutex_t THR_LOCK_malloc,THR_LOCK_open,THR_LOCK_keycache,
   THR_LOCK_lock,THR_LOCK_isam,THR_LOCK_net,THR_LOCK_charset;
+extern pthread_mutex_t LOCK_bitmap;
 #else /* THREAD */
 #define pthread_mutex_lock(A)
 #define pthread_mutex_unlock(A)
-- 
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