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+/****************************************************************************
+*
+* SciTech OS Portability Manager Library
+*
+* ========================================================================
+*
+* The contents of this file are subject to the SciTech MGL Public
+* License Version 1.0 (the "License"); you may not use this file
+* except in compliance with the License. You may obtain a copy of
+* the License at http://www.scitechsoft.com/mgl-license.txt
+*
+* Software distributed under the License is distributed on an
+* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+* implied. See the License for the specific language governing
+* rights and limitations under the License.
+*
+* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
+*
+* The Initial Developer of the Original Code is SciTech Software, Inc.
+* All Rights Reserved.
+*
+* ========================================================================
+*
+*
+* Language: ANSI C
+* Environment: any
+*
+* Description: Test program to determine just how much memory can be
+* allocated with the compiler in use. Compile and link
+* with the appropriate command line for your DOS extender.
+*
+* Functions tested: PM_malloc()
+* PM_availableMemory()
+*
+*
+****************************************************************************/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include "pmapi.h"
+
+#ifdef __16BIT__
+#define MAXALLOC 64
+#else
+#define MAXALLOC 2000
+#endif
+
+int main(void)
+{
+ int i;
+ ulong allocs;
+ ulong physical,total;
+ char *p,*pa[MAXALLOC];
+
+ printf("Program running in ");
+ switch (PM_getModeType()) {
+ case PM_realMode:
+ printf("real mode.\n\n");
+ break;
+ case PM_286:
+ printf("16 bit protected mode.\n\n");
+ break;
+ case PM_386:
+ printf("32 bit protected mode.\n\n");
+ break;
+ }
+
+ printf("Memory available at start:\n");
+ PM_availableMemory(&physical,&total);
+ printf(" Physical memory: %ld Kb\n", physical / 1024);
+ printf(" Total (including virtual): %ld Kb\n", total / 1024);
+ printf("\n");
+ for (allocs = i = 0; i < MAXALLOC; i++) {
+ if ((pa[i] = PM_malloc(10*1024)) != 0) { /* in 10k blocks */
+ p = pa[allocs];
+ memset(p, 0, 10*1024); /* touch every byte */
+ *p = 'x'; /* do something, anything with */
+ p[1023] = 'y'; /* the allocated memory */
+ allocs++;
+ printf("Allocated %lu bytes\r", 10*(allocs << 10));
+ }
+ else break;
+ if (PM_kbhit() && (PM_getch() == 0x1B))
+ break;
+ }
+
+ printf("\n\nAllocated total of %lu bytes\n", 10 * (allocs << 10));
+
+ printf("\nMemory available at end:\n");
+ PM_availableMemory(&physical,&total);
+ printf(" Physical memory: %ld Kb\n", physical / 1024);
+ printf(" Total (including virtual): %ld Kb\n", total / 1024);
+
+ for (i = allocs-1; i >= 0; i--)
+ PM_free(pa[i]);
+
+ printf("\nMemory available after freeing all blocks (note that under protected mode\n");
+ printf("this will most likely not be correct after freeing blocks):\n\n");
+ PM_availableMemory(&physical,&total);
+ printf(" Physical memory: %ld Kb\n", physical / 1024);
+ printf(" Total (including virtual): %ld Kb\n", total / 1024);
+
+ return 0;
+}
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