1 files changed, 248 insertions, 0 deletions
diff --git a/kdecore/tests/kmemtest.cpp b/kdecore/tests/kmemtest.cpp
new file mode 100644
index 000000000..83c452e50
--- /dev/null
+++ b/kdecore/tests/kmemtest.cpp
@@ -0,0 +1,248 @@
+#include <stdio.h>
+#include <kapplication.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+void showMem()
+{
+   char buf[257];
+
+   printf("Reported Memory Usage Of This Process:\n");
+
+   FILE *fs = fopen("/proc/self/status", "r");
+   bool done = false;
+   while (!done)
+   {
+       fgets(buf, 256, fs);
+       buf[256] = 0;
+       if ((strncmp(buf, "VmLib", 5)==0) ||
+           (strncmp(buf, "VmData", 6)==0) ||
+           (strncmp(buf, "VmSize", 6)==0) ||
+           (strncmp(buf, "VmExe", 5)==0) ||
+           (strncmp(buf, "VmRSS", 5)==0) ||
+           (strncmp(buf, "VmLck", 5)==0))
+          printf("%s", buf);
+       done = (strncmp(buf, "VmLib", 5) == 0);
+   }
+   fclose(fs);
+}
+
+long showTotalMem()
+{
+   long realMem = 0; 
+   char buf[257];
+
+   FILE *fs = fopen("/proc/meminfo", "r");
+   bool done = false;
+   while (!done)
+   {
+       fgets(buf, 256, fs);
+       buf[256] = 0;
+       if (strlen(buf)==0) done = true;
+       if (strncmp(buf, "Mem:", 4)==0)
+       {
+          long total = 0;
+          long used = 0;
+          long free = 0;
+          long shared = 0;
+          long buffers = 0;
+          long cached = 0;
+          sscanf(buf, "Mem: %ld %ld %ld %ld %ld %ld", 
+             &total, &used, &free, &shared, &buffers, &cached);
+          realMem = used-buffers-cached;
+          printf("Actual Total Memory Usage: %0.1fKb\n", realMem/1024.0);
+          done = true;
+       }
+   }
+   fclose(fs);
+   return realMem;
+}
+
+long memSize()
+{
+   long realMem = 0; 
+   char buf[257];
+
+   FILE *fs = fopen("/proc/meminfo", "r");
+   bool done = false;
+   while (!done)
+   {
+       fgets(buf, 256, fs);
+       buf[256] = 0;
+       if (strlen(buf)==0) done = true;
+       if (strncmp(buf, "Mem:", 4)==0)
+       {
+          long total = 0;
+          long used = 0;
+          long free = 0;
+          long shared = 0;
+          long buffers = 0;
+          long cached = 0;
+          sscanf(buf, "Mem: %ld %ld %ld %ld %ld %ld", 
+             &total, &used, &free, &shared, &buffers, &cached);
+          realMem = total;
+          done = true;
+       }
+   }
+   fclose(fs);
+   return realMem;
+}
+
+void *mmapFile(const char *file)
+{
+   int fd = open(file, O_RDONLY);
+   if (fd == 0)
+   {
+      printf("open: %s\n", strerror(errno));
+      exit(-1);
+   }   
+
+   struct stat stat_s;
+   int result = fstat(fd, &stat_s);
+   if (result)
+   {
+      printf("stat: %s\n", strerror(errno));
+      exit(-1);
+   }   
+     
+   void *ptr = mmap(0, stat_s.st_size, PROT_READ, MAP_SHARED, fd, 0);
+   if (ptr == 0)
+   {
+      printf("mmap: %s\n", strerror(errno));
+      exit(-1);
+   }   
+   return ptr;
+}
+
+int main(int argc, char *argv[]) 
+{
+  if ((argc==2) && (strcmp(argv[1], "all")==0))
+  {
+     long mem_size = memSize();
+     mem_size += mem_size / 16;
+     printf("Malloc... %0.1fMb\n", mem_size/(1024.0*1024.0));
+     char *mem = (char *) malloc(mem_size);
+     for(long i=0; i < mem_size; i+=1024)
+     {
+        mem[i] = 99;
+     }
+     printf("Done!\n");
+     exit(1);
+  }
+
+  if ((argc==3) && (strcmp(argv[1], "calc")==0))
+  {
+     char buf[257];
+     int total = 0;
+     long val;
+     while(true)
+     {
+        buf[0] = 0;
+        fgets(buf, sizeof(buf), stdin);
+        if (!strlen(buf))
+        {
+           printf("%s total = %0.1fKb (%d bytes)\n", argv[2], total/1024.0, total);
+           exit(1);
+        }
+        sscanf(buf, "%lx", &val);
+        total += val;
+// printf("Val = %ld\n", val);
+     }
+     exit(1);
+  }
+  
+
+  if ((argc>=2) && (strcmp(argv[1], "launch")==0))
+  {
+     showMem();
+
+     char buf[200];
+  
+     if (argc >=3)
+        snprintf(buf, 200, "%s &", argv[2]);
+     else
+        snprintf(buf, 200, "%s &", argv[0]);
+
+     printf("Waiting for memory usage to settle down....\n");
+     long prev = showTotalMem();
+     long diff = 0;
+     do {
+       sleep(15);
+       long next = showTotalMem();
+       if (next > prev)
+          diff = next - prev;
+       else
+          diff = prev-next;
+       prev = next;
+     }
+     while (diff > 2*1024);
+
+     for(int i=0; i < 5; i++)
+     {
+        printf("Launching #%d\n", i);
+        system(buf);
+        sleep(2);
+     }
+
+     sleep(10);
+     printf("Waiting for memory usage to settle down....\n");
+     prev = showTotalMem();
+     diff = 0;
+     do {
+       sleep(15);
+       long next = showTotalMem();
+       if (next > prev)
+          diff = next - prev;
+       else
+          diff = prev-next;
+       prev = next;
+     }
+     while (diff > 2*1024);
+     long fiveMem =  prev;
+
+     for(int i=5; i < 15; i++)
+     {
+        printf("Launching #%d\n", i);
+        system(buf);
+        sleep(2);
+     }
+
+     sleep(10);
+     printf("Waiting for memory usage to settle down....\n");
+     prev = showTotalMem();
+     diff = 0;
+     do {
+       sleep(15);
+       long next = showTotalMem();
+       if (next > prev)
+          diff = next - prev;
+       else
+          diff = prev-next;
+       prev = next;
+     }
+     while (diff > 2*1024);
+     long fifteenMem =  prev;
+     showMem();
+
+     printf("Actual memory usage of 1 instance = %0.1f Kb\n", 
+           (fifteenMem - fiveMem) /10240.0);
+  }
+//  showMem("second");
+
+    KApplication app(argc,argv,"kurltest");
+
+//  showMem("After KApplication constructor");
+
+//  malloc(10*1024);
+
+//  showMem("After 10K malloc");
+
+  printf("Sleeping...\n");
+  sleep(8000);
+}