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+//=================================================================
+//
+//        malloc2.c
+//
+//        Stress testcase for C library malloc(), calloc() and free()
+//
+//=================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos 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://sourceware.cygnus.com/ecos
+// 
+// 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 eCos - Embedded Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998 Cygnus Solutions.  All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//=================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):     jlarmour@cygnus.co.uk
+// Contributors:    jlarmour@cygnus.co.uk
+// Date:          1998/6/3
+// Description:   Contains testcode to stress-test C library malloc(),
+//                calloc() and free() functions
+//
+//
+//####DESCRIPTIONEND####
+
+// Declarations for test system:
+//
+// TESTCASE_TYPE=CYG_TEST_MODULE
+// CYG_TEST_HEARTBEAT=120
+
+// INCLUDES
+
+#include <pkgconf/libc.h> // config header for C library so we can know size
+                          // of malloc pool
+#include <stdlib.h>
+#include <cyg/infra/testcase.h>
+#include <sys/cstartup.h>          // C library initialisation
+
+
+// CONSTANTS
+
+#define NUM_ITERATIONS 1000
+
+// GLOBALS
+
+#if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC)
+static int problem=0;
+#endif
+
+// FUNCTIONS
+
+
+externC void
+cyg_package_start( void )
+{
+#ifdef CYGPKG_LIBC
+    cyg_iso_c_start();
+#else
+    (void)main(0, NULL);
+#endif
+} // cyg_package_start()
+
+
+#if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC)
+
+static void *
+safe_malloc( size_t size )
+{
+    void *ptr;
+
+    ptr=malloc(size);
+
+    if (ptr==NULL)
+    {
+        CYG_TEST_FAIL( "malloc returned NULL! "
+                       "Perhaps the allocator doesn't coalesce?" );
+        problem++;
+    } // if
+
+    return ptr;
+} // safe_malloc()
+
+
+static void *
+safe_calloc( size_t size )
+{
+    void *ptr;
+    int i;
+
+    ptr=calloc(size,1);
+
+    if (ptr==NULL)
+    {
+        CYG_TEST_FAIL( "calloc returned NULL! "
+                       "Perhaps the allocator doesn't coalesce" );
+        problem++;
+    } // if
+    else
+    {
+        for (i=0; i < size; i++)
+        {
+            if (((char *)ptr)[i] != 0)
+            {
+                CYG_TEST_FAIL("calloc didn't clear data completely");
+                problem++;
+                return ptr;
+            } // if
+        } // for
+    } // else
+
+    return ptr;
+} // safe_calloc()
+
+
+static void
+fill_with_data( char *buf, int size )
+{
+    int i;
+
+    for (i=0; i < size; i++)
+        buf[i] = 'f';
+
+    for (i=0; i < size; i++)
+        if (buf[i] != 'f')
+        {
+            CYG_TEST_FAIL( "data written to buffer does not compare "
+                           "correctly! #1" );
+            problem++;
+            return;
+        } // if
+
+
+    for (i=0; i < size; i++)
+        buf[i] = 'z';
+
+    for (i=0; i < size; i++)
+        if (buf[i] != 'z')
+        {
+            CYG_TEST_FAIL( "data written to buffer does not compare "
+                           "correctly! #2" );
+            problem++;
+            return;
+        } // if
+
+} // fill_with_data()
+
+#endif // if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC)
+
+int
+main( int argc, char *argv[] )
+{
+#if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC)
+    char *str1, *str2, *str3;
+    int j;
+#endif
+
+    CYG_TEST_INIT();
+
+    CYG_TEST_INFO("Starting stress tests from testcase " __FILE__ " for C "
+                  "library malloc(), calloc() and free() functions");
+
+#if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC)
+
+    if ( CYGNUM_LIBC_MALLOC_MEMPOOL_SIZE < 300 )
+    {
+        CYG_TEST_FAIL_FINISH("This testcase cannot safely be used with a "
+                             "memory pool for malloc less than 300 bytes");
+    } // if
+
+
+    for ( j=1; j < NUM_ITERATIONS; j++)
+    {
+//        if ((j % 100) == 0)
+//            CYG_TEST_STILL_ALIVE( j, "Multiple mallocs and frees continuing" );
+
+        
+        str1 = (char *)safe_malloc(50);
+        fill_with_data( str1, 50 );
+        str2 = (char *)safe_calloc(11);
+        fill_with_data( str2, 11 );
+        str3 = (char *)safe_malloc(32);
+        fill_with_data( str3, 32 );
+
+        free(str2);
+        free(str1);
+
+        str2 = (char *)safe_calloc(11);
+        fill_with_data( str2, 11 );
+        free(str2);
+
+        str1 = (char *)safe_calloc(50);
+        fill_with_data( str1, 50 );
+        free(str3);
+
+        str3 = (char *)safe_malloc(32);
+        fill_with_data( str3, 32 );
+        free(str1);
+
+        str2 = (char *)safe_calloc(11);
+        fill_with_data( str2, 11 );
+        str1 = (char *)safe_malloc(50);
+        fill_with_data( str1, 50 );
+
+        free(str3);
+        free(str1);
+        free(str2);
+
+        if (problem != 0)
+            break;
+    } // for
+
+    // Did it completely successfully?
+    if (j==NUM_ITERATIONS)
+        CYG_TEST_PASS("Stress test completed successfully");
+
+#else
+    CYG_TEST_PASS("Testing is not applicable to this configuration");
+#endif // if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_MALLOC)
+
+    
+    CYG_TEST_FINISH("Finished stress tests from testcase " __FILE__ " for C "
+                    "library malloc(), calloc() and free() functions");
+} // main()
+
+// EOF malloc2.c