diff src/share/vm/runtime/globals.cpp @ 0:a61af66fc99e jdk7-b24

Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children 183f41cf8bfe
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/runtime/globals.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,429 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+# include "incls/_precompiled.incl"
+# include "incls/_globals.cpp.incl"
+
+
+RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
+              MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
+              MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG, \
+              MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG)
+
+RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
+                 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
+                 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG)
+
+bool Flag::is_unlocker() const {
+  return strcmp(name, "UnlockDiagnosticVMOptions") == 0;
+}
+
+bool Flag::is_unlocked() const {
+  if (strcmp(kind, "{diagnostic}") == 0) {
+    return UnlockDiagnosticVMOptions;
+  } else {
+    return true;
+  }
+}
+
+bool Flag::is_writeable() const {
+  return (strcmp(kind, "{manageable}") == 0 || strcmp(kind, "{product rw}") == 0);
+}
+
+// All flags except "manageable" are assumed internal flags.
+// Long term, we need to define a mechanism to specify which flags
+// are external/stable and change this function accordingly.
+bool Flag::is_external() const {
+  return (strcmp(kind, "{manageable}") == 0);
+}
+
+// Length of format string (e.g. "%.1234s") for printing ccstr below
+#define FORMAT_BUFFER_LEN 16
+
+void Flag::print_on(outputStream* st) {
+  st->print("%5s %-35s %c= ", type, name, (origin != DEFAULT ? ':' : ' '));
+  if (is_bool())  st->print("%-16s", get_bool() ? "true" : "false");
+  if (is_intx())  st->print("%-16ld", get_intx());
+  if (is_uintx()) st->print("%-16lu", get_uintx());
+  if (is_ccstr()) {
+    const char* cp = get_ccstr();
+    const char* eol;
+    while ((eol = strchr(cp, '\n')) != NULL) {
+      char format_buffer[FORMAT_BUFFER_LEN];
+      size_t llen = pointer_delta(eol, cp, sizeof(char));
+      jio_snprintf(format_buffer, FORMAT_BUFFER_LEN,
+                   "%%." SIZE_FORMAT "s", llen);
+      st->print(format_buffer, cp);
+      st->cr();
+      cp = eol+1;
+      st->print("%5s %-35s += ", "", name);
+    }
+    st->print("%-16s", cp);
+  }
+  st->print(" %s", kind);
+  st->cr();
+}
+
+void Flag::print_as_flag(outputStream* st) {
+  if (is_bool()) {
+    st->print("-XX:%s%s", get_bool() ? "+" : "-", name);
+  } else if (is_intx()) {
+    st->print("-XX:%s=" INTX_FORMAT, name, get_intx());
+  } else if (is_uintx()) {
+    st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx());
+  } else if (is_ccstr()) {
+    st->print("-XX:%s=", name);
+    // Need to turn embedded '\n's back into separate arguments
+    // Not so efficient to print one character at a time,
+    // but the choice is to do the transformation to a buffer
+    // and print that.  And this need not be efficient.
+    for (const char* cp = get_ccstr(); *cp != '\0'; cp += 1) {
+      switch (*cp) {
+      default:
+        st->print("%c", *cp);
+        break;
+      case '\n':
+        st->print(" -XX:%s=", name);
+        break;
+      }
+    }
+  } else {
+    ShouldNotReachHere();
+  }
+}
+
+// 4991491 do not "optimize out" the was_set false values: omitting them
+// tickles a Microsoft compiler bug causing flagTable to be malformed
+
+#define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product}", DEFAULT },
+#define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, "{pd product}", DEFAULT },
+#define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{diagnostic}", DEFAULT },
+#define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{manageable}", DEFAULT },
+#define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product rw}", DEFAULT },
+
+#ifdef PRODUCT
+  #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
+  #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     /* flag is constant */
+  #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
+#else
+  #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "", DEFAULT },
+  #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, "{pd}", DEFAULT },
+  #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{notproduct}", DEFAULT },
+#endif
+
+#define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 product}", DEFAULT },
+#define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, "{C1 pd product}", DEFAULT },
+#ifdef PRODUCT
+  #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
+  #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     /* flag is constant */
+  #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
+#else
+  #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1}", DEFAULT },
+  #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, "{C1 pd}", DEFAULT },
+  #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 notproduct}", DEFAULT },
+#endif
+
+
+#define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 product}", DEFAULT },
+#define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, "{C2 pd product}", DEFAULT },
+#define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 diagnostic}", DEFAULT },
+#ifdef PRODUCT
+  #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
+  #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     /* flag is constant */
+  #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
+#else
+  #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2}", DEFAULT },
+  #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc)     { #type, XSTR(name), &name, "{C2 pd}", DEFAULT },
+  #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 notproduct}", DEFAULT },
+#endif
+
+
+static Flag flagTable[] = {
+ RUNTIME_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT)
+ RUNTIME_OS_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT)
+#ifdef COMPILER1
+ C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT)
+#endif
+#ifdef COMPILER2
+ C2_FLAGS(C2_DEVELOP_FLAG_STRUCT, C2_PD_DEVELOP_FLAG_STRUCT, C2_PRODUCT_FLAG_STRUCT, C2_PD_PRODUCT_FLAG_STRUCT, C2_DIAGNOSTIC_FLAG_STRUCT, C2_NOTPRODUCT_FLAG_STRUCT)
+#endif
+ {0, NULL, NULL}
+};
+
+Flag* Flag::flags = flagTable;
+size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag));
+
+inline bool str_equal(const char* s, char* q, size_t len) {
+  // s is null terminated, q is not!
+  if (strlen(s) != (unsigned int) len) return false;
+  return strncmp(s, q, len) == 0;
+}
+
+Flag* Flag::find_flag(char* name, size_t length) {
+  for (Flag* current = &flagTable[0]; current->name; current++) {
+    if (str_equal(current->name, name, length)) {
+      if (!(current->is_unlocked() || current->is_unlocker())) {
+        // disable use of diagnostic flags until they are unlocked
+        return NULL;
+      }
+      return current;
+    }
+  }
+  return NULL;
+}
+
+// Returns the address of the index'th element
+static Flag* address_of_flag(CommandLineFlagWithType flag) {
+  assert((size_t)flag < Flag::numFlags, "bad command line flag index");
+  return &Flag::flags[flag];
+}
+
+bool CommandLineFlagsEx::is_default(CommandLineFlag flag) {
+  assert((size_t)flag < Flag::numFlags, "bad command line flag index");
+  Flag* f = &Flag::flags[flag];
+  return (f->origin == DEFAULT);
+}
+
+bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) {
+  Flag* result = Flag::find_flag((char*)name, strlen(name));
+  if (result == NULL) return false;
+  *value = (result->origin == COMMAND_LINE);
+  return true;
+}
+
+bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_bool()) return false;
+  *value = result->get_bool();
+  return true;
+}
+
+bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_bool()) return false;
+  bool old_value = result->get_bool();
+  result->set_bool(*value);
+  *value = old_value;
+  result->origin = origin;
+  return true;
+}
+
+void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) {
+  Flag* faddr = address_of_flag(flag);
+  guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type");
+  faddr->set_bool(value);
+  faddr->origin = origin;
+}
+
+bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_intx()) return false;
+  *value = result->get_intx();
+  return true;
+}
+
+bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_intx()) return false;
+  intx old_value = result->get_intx();
+  result->set_intx(*value);
+  *value = old_value;
+  result->origin = origin;
+  return true;
+}
+
+void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) {
+  Flag* faddr = address_of_flag(flag);
+  guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type");
+  faddr->set_intx(value);
+  faddr->origin = origin;
+}
+
+bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_uintx()) return false;
+  *value = result->get_uintx();
+  return true;
+}
+
+bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_uintx()) return false;
+  uintx old_value = result->get_uintx();
+  result->set_uintx(*value);
+  *value = old_value;
+  result->origin = origin;
+  return true;
+}
+
+void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) {
+  Flag* faddr = address_of_flag(flag);
+  guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type");
+  faddr->set_uintx(value);
+  faddr->origin = origin;
+}
+
+bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_double()) return false;
+  *value = result->get_double();
+  return true;
+}
+
+bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_double()) return false;
+  double old_value = result->get_double();
+  result->set_double(*value);
+  *value = old_value;
+  result->origin = origin;
+  return true;
+}
+
+void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) {
+  Flag* faddr = address_of_flag(flag);
+  guarantee(faddr != NULL && faddr->is_double(), "wrong flag type");
+  faddr->set_double(value);
+  faddr->origin = origin;
+}
+
+bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_ccstr()) return false;
+  *value = result->get_ccstr();
+  return true;
+}
+
+// Contract:  Flag will make private copy of the incoming value.
+// Outgoing value is always malloc-ed, and caller MUST call free.
+bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_ccstr()) return false;
+  ccstr old_value = result->get_ccstr();
+  char* new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1);
+  strcpy(new_value, *value);
+  result->set_ccstr(new_value);
+  if (result->origin == DEFAULT && old_value != NULL) {
+    // Prior value is NOT heap allocated, but was a literal constant.
+    char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1);
+    strcpy(old_value_to_free, old_value);
+    old_value = old_value_to_free;
+  }
+  *value = old_value;
+  result->origin = origin;
+  return true;
+}
+
+// Contract:  Flag will make private copy of the incoming value.
+void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) {
+  Flag* faddr = address_of_flag(flag);
+  guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type");
+  ccstr old_value = faddr->get_ccstr();
+  char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1);
+  strcpy(new_value, value);
+  faddr->set_ccstr(new_value);
+  if (faddr->origin != DEFAULT && old_value != NULL) {
+    // Prior value is heap allocated so free it.
+    FREE_C_HEAP_ARRAY(char, old_value);
+  }
+  faddr->origin = origin;
+}
+
+extern "C" {
+  static int compare_flags(const void* void_a, const void* void_b) {
+    return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name);
+  }
+}
+
+void CommandLineFlags::printSetFlags() {
+  // Print which flags were set on the command line
+  // note: this method is called before the thread structure is in place
+  //       which means resource allocation cannot be used.
+
+  // Compute size
+  int length= 0;
+  while (flagTable[length].name != NULL) length++;
+
+  // Sort
+  Flag** array = NEW_C_HEAP_ARRAY(Flag*, length);
+  for (int index = 0; index < length; index++) {
+    array[index] = &flagTable[index];
+  }
+  qsort(array, length, sizeof(Flag*), compare_flags);
+
+  // Print
+  for (int i = 0; i < length; i++) {
+    if (array[i]->origin /* naked field! */) {
+      array[i]->print_as_flag(tty);
+      tty->print(" ");
+    }
+  }
+  tty->cr();
+  FREE_C_HEAP_ARRAY(Flag*, array);
+}
+
+#ifndef PRODUCT
+
+
+void CommandLineFlags::verify() {
+  assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict");
+}
+
+void CommandLineFlags::printFlags() {
+  // Print the flags sorted by name
+  // note: this method is called before the thread structure is in place
+  //       which means resource allocation cannot be used.
+
+  // Compute size
+  int length= 0;
+  while (flagTable[length].name != NULL) length++;
+
+  // Sort
+  Flag** array = NEW_C_HEAP_ARRAY(Flag*, length);
+  for (int index = 0; index < length; index++) {
+    array[index] = &flagTable[index];
+  }
+  qsort(array, length, sizeof(Flag*), compare_flags);
+
+  // Print
+  tty->print_cr("[Global flags]");
+  for (int i = 0; i < length; i++) {
+    if (array[i]->is_unlocked()) {
+      array[i]->print_on(tty);
+    }
+  }
+  FREE_C_HEAP_ARRAY(Flag*, array);
+}
+
+#endif