Pull in sources from zephyr locker. See /mit/zephyr/repository for

detailed change information.

1 files changed, 244 insertions, 0 deletions

diff --git a/zwgc/new_memory.c b/zwgc/new_memory.c
new file mode 100644
index 0000000..541712a
--- /dev/null
+++ b/zwgc/new_memory.c
@@ -0,0 +1,244 @@
+/* This file is part of the Project Athena Zephyr Notification System.
+ * It is one of the source files comprising zwgc, the Zephyr WindowGram
+ * client.
+ *
+ *      Created by:     Marc Horowitz <marc@athena.mit.edu>
+ *
+ *      $Source$
+ *      $Author$
+ *
+ *      Copyright (c) 1989 by the Massachusetts Institute of Technology.
+ *      For copying and distribution information, see the file
+ *      "mit-copyright.h".
+ */
+
+#include <sysdep.h>
+
+#if (!defined(lint) && !defined(SABER))
+static const char rcsid_new_memory_c[] = "$Id$";
+#endif
+
+#if !defined(SABER) && (defined(DEBUG) || defined(MEMORY_DEBUG))
+
+/*
+ * memory - module wrapping debugging code around normal malloc/free/etc.
+ *          routines.
+ *
+ * Overview:
+ *
+ *        ...
+ */
+
+#define  memory__PROVIDER
+#include "new_memory.h"
+
+/*
+ *
+ */
+#ifdef DEBUG
+#define  assert(x)          if (!(x)) abort()
+#else
+#define  assert(x)          
+#endif
+
+/*
+ *
+ */
+#ifdef DEBUG_MEMORY
+
+extern void record_request();
+char *current_module = 0;
+int current_line = -1;
+
+#endif
+
+/*
+ *    string string_CreateFromData(char *data, int length):
+ *        Requires: data[0], data[1], ..., data[length-1] != 0
+ *        Effects: Takes the first length characters at data and
+ *                 creates a string containing them.  The returned string
+ *                 is on the heap & must be freed eventually.
+ *                 I.e., if passed "foobar" and 3, it would return
+ *                 string_Copy("foo").
+ */
+
+char *memory__malloc(size)
+     unsigned size;
+{
+    char *result;
+
+    result = malloc(size + memory__size_of_header);
+    if (!result)
+      abort();       /* <<<>>> */
+
+#ifdef DEBUG_MEMORY
+    ((memory_block_header *)result)->size = size;
+    ((memory_block_header *)result)->creating_module = current_module;
+    ((memory_block_header *)result)->line_number_in_creating_module =
+      current_line;
+    ((memory_block_header *)result)->check_field = CHECK_FIELD_VALUE;
+    result += memory__size_of_header;
+
+    record_request(current_module, current_line, 1, size);
+#endif
+
+    return(result);
+}
+
+char *memory__realloc(ptr, size)
+     char *ptr;
+     unsigned size;
+{
+    char *result;
+
+    assert(ptr);
+
+#ifdef DEBUG_MEMORY
+    if (!memory__on_heap_p(ptr)) {
+	printf("realloced non-memory block in %s on line %d!\n",
+	       current_module, current_line);
+	fflush(stdout);
+	return(realloc(ptr, size));
+    }
+#endif
+
+    result = realloc(ptr-memory__size_of_header, size+memory__size_of_header);
+    if (!result)
+      abort(); /* <<<>>> */
+
+    return(result+memory__size_of_header);
+}
+
+char *memory__calloc(nelem, elsize)
+     unsigned nelem;
+     unsigned elsize;
+{
+    char *result;
+
+#ifdef DEBUG_MEMORY
+    printf("in calloc\n"); fflush(stdout);
+#endif
+
+    abort();
+
+#ifdef FRED
+    result = calloc(nelem, elsize);
+    if (!result)
+      abort();
+
+    record_request(1);
+#endif
+
+    return(result);
+}
+
+void memory__free(ptr)
+     char *ptr;
+{
+    assert(ptr);
+
+#ifdef DEBUG_MEMORY
+    if (!memory__on_heap_p(ptr)) {
+	printf("freed non-memory block in %s on line %d!\n", current_module,
+	       current_line);
+	fflush(stdout);
+	(void)free(ptr);
+	return;
+    }
+
+    record_request(memory__get_header(ptr)->creating_module,
+		   memory__get_header(ptr)->line_number_in_creating_module,
+		   -1,
+		   memory__get_header(ptr)->size);
+#endif
+
+    (void)free(ptr-memory__size_of_header);
+}
+
+#ifdef DEBUG_MEMORY
+
+#include "int_dictionary.h"
+
+static int request_off = 0;
+static int_dictionary requests = 0;
+static int outstanding_requests = 0;
+static int outstanding_memory = 0;
+
+void record_request(module, line_number, dir, size)
+     char *module;
+     int line_number;
+     int dir;
+     unsigned int size;
+{
+    int_dictionary_binding *binding;
+    int already_exists;
+#ifdef LINE
+    char buffer[20];
+#endif
+
+    if (request_off)
+      return;
+    request_off = 1;
+
+    if (!requests)
+      requests = int_dictionary_Create(101);
+
+#ifdef LINE
+    module = string_Concat(module, ":");
+    sprintf(buffer, "%d", line_number);
+    module = string_Concat2(module, buffer);
+#endif
+
+    binding = int_dictionary_Define(requests, module, &already_exists);
+    if (!already_exists)
+      binding->value = 0;
+
+#ifdef LINE
+    free(module);
+#endif
+
+    binding->value += dir;
+    outstanding_requests += dir;
+    outstanding_memory += size*dir;
+
+    request_off = 0;
+}
+
+void proc(binding)
+     int_dictionary_binding *binding;
+{
+    if (binding->value)
+      printf("    %-30s %6d blocks allocated\n", binding->key, binding->value);
+}
+
+void report_memory_usage()
+{
+    printf("\n# of blocks on the heap = %d\n", outstanding_requests);
+    printf("Total heap space in use: %d bytes\n", outstanding_memory);
+
+    printf("\nHeap Allocations by module:\n");
+    int_dictionary_Enumerate(requests, proc);
+    printf("\n");
+
+    fflush(stdout);
+}
+
+void set_module(file, line)
+     char *file;
+     int line;
+{
+    if (request_off)
+      return;
+
+    if (!strcmp(file, "new_string.c"))
+      return;
+    if (!strcmp(file, "string_dictionary_aux.c"))
+      return;
+
+    current_line = line;
+    current_module = file;
+}
+
+#endif
+
+#endif /* SABER */