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/*
* Copyright (C) 2019 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "JSCOptions.h"
#include "Options.h"
#include <glib/gi18n-lib.h>
#include <wtf/Vector.h>
#include <wtf/glib/GSpanExtras.h>
#include <wtf/glib/GUniquePtr.h>
/**
* SECTION: JSCOptions
* @short_description: JavaScript options
* @title: JSCOptions
*
* JavaScript options allow changing the behavior of the JavaScript engine.
* They affect the way the engine works, so the options must be set
* at the very beginning of the program execution, before any other JavaScript
* API call. Most of the options are only useful for testing and debugging.
* Only a few of them are documented; you can use the undocumented options at
* your own risk. (You can find the list of options in the WebKit source code).
*
* The API allows setting and getting any option using the types defined in #JSCOptionType.
* You can also iterate all the available options using jsc_options_foreach() and
* passing a #JSCOptionsFunc callback. If your application uses #GOptionContext to handle
* command line arguments, you can easily integrate the JSCOptions by adding the
* #GOptionGroup returned by jsc_options_get_option_group().
*
* Since: 2.24
*/
using namespace JSC;
using int32 = int32_t;
using size = size_t;
static bool valueFromGValue(const GValue* gValue, bool& value)
{
value = g_value_get_boolean(gValue);
return true;
}
static void valueToGValue(bool value, GValue* gValue)
{
g_value_set_boolean(gValue, value);
}
static bool valueFromGValue(const GValue* gValue, int32_t& value)
{
value = g_value_get_int(gValue);
return true;
}
static void valueToGValue(int32_t value, GValue* gValue)
{
g_value_set_int(gValue, value);
}
#if CPU(ADDRESS64)
static bool valueFromGValue(const GValue* gValue, unsigned& value)
{
value = g_value_get_uint(gValue);
return true;
}
static void valueToGValue(unsigned value, GValue* gValue)
{
g_value_set_uint(gValue, value);
}
#endif
static bool valueFromGValue(const GValue* gValue, size_t& value)
{
value = GPOINTER_TO_SIZE(g_value_get_pointer(gValue));
return true;
}
static void valueToGValue(size_t value, GValue* gValue)
{
g_value_set_pointer(gValue, GSIZE_TO_POINTER(value));
}
static bool valueFromGValue(const GValue* gValue, const char8_t*& value)
{
value = byteCast<char8_t>(g_value_dup_string(gValue));
return true;
}
static void valueToGValue(const char8_t* value, GValue* gValue)
{
g_value_set_string(gValue, byteCast<char>(value));
}
static bool valueFromGValue(const GValue* gValue, double& value)
{
value = g_value_get_double(gValue);
return true;
}
static void valueToGValue(double value, GValue* gValue)
{
g_value_set_double(gValue, value);
}
static bool valueFromGValue(const GValue* gValue, OptionRange& value)
{
return value.init(g_value_get_string(gValue) ? g_value_get_string(gValue) : "<null>");
}
static void valueToGValue(const OptionRange& value, GValue* gValue)
{
const char* rangeString = value.rangeString();
g_value_set_string(gValue, !g_strcmp0(rangeString, "<null>") ? nullptr : rangeString);
}
static bool valueFromGValue(const GValue* gValue, GCLogging::Level& value)
{
switch (g_value_get_uint(gValue)) {
case 0:
value = GCLogging::Level::None;
return true;
case 1:
value = GCLogging::Level::Basic;
return true;
case 2:
value = GCLogging::Level::Verbose;
return true;
default:
break;
}
return false;
}
static void valueToGValue(GCLogging::Level value, GValue* gValue)
{
switch (value) {
case GCLogging::Level::None:
g_value_set_uint(gValue, 0);
break;
case GCLogging::Level::Basic:
g_value_set_uint(gValue, 1);
break;
case GCLogging::Level::Verbose:
g_value_set_uint(gValue, 2);
break;
}
}
static bool valueFromGValue(const GValue* gValue, OSLogType& value)
{
unsigned optionValue = g_value_get_uint(gValue);
if (optionValue > static_cast<unsigned>(OSLogType::Fault))
return false;
value = static_cast<OSLogType>(optionValue);
return true;
}
static void valueToGValue(OSLogType value, GValue* gValue)
{
g_value_set_uint(gValue, static_cast<unsigned>(value));
}
static gboolean jscOptionsSetValue(const char* option, const GValue* value)
{
Options::AllowUnfinalizedAccessScope scope;
#define SET_OPTION_VALUE(type_, name_, defaultValue_, availability_, description_) \
if (!g_strcmp0(#name_, option)) { \
OptionsStorage::type_ valueToSet; \
if (!valueFromGValue(value, valueToSet)) \
return FALSE; \
Options::name_() = valueToSet; \
return TRUE; \
}
Options::initialize([] { });
FOR_EACH_JSC_OPTION(SET_OPTION_VALUE)
#undef SET_OPTION_VALUE
return FALSE;
}
static gboolean jscOptionsGetValue(const char* option, GValue* value)
{
Options::AllowUnfinalizedAccessScope scope;
#define GET_OPTION_VALUE(type_, name_, defaultValue_, availability_, description_) \
if (!g_strcmp0(#name_, option)) { \
OptionsStorage::type_ valueToGet = Options::name_(); \
valueToGValue(valueToGet, value); \
return TRUE; \
}
Options::initialize([] { });
FOR_EACH_JSC_OPTION(GET_OPTION_VALUE)
#undef GET_OPTION_VALUE
return FALSE;
}
/**
* jsc_options_set_boolean:
* @option: the option identifier
* @value: the value to set
*
* Set @option as a #gboolean value.
*
* Returns: %TRUE if option was correctly set or %FALSE otherwise.
*
* Since: 2.24
*/
gboolean jsc_options_set_boolean(const char* option, gboolean value)
{
g_return_val_if_fail(option, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_BOOLEAN);
g_value_set_boolean(&gValue, value);
return jscOptionsSetValue(option, &gValue);
}
/**
* jsc_options_get_boolean:
* @option: the option identifier
* @value: (out): return location for the option value
*
* Get @option as a #gboolean value.
*
* Returns: %TRUE if @value has been set or %FALSE if the option doesn't exist
*
* Since: 2.24
*/
gboolean jsc_options_get_boolean(const char* option, gboolean* value)
{
g_return_val_if_fail(option, FALSE);
g_return_val_if_fail(value, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_BOOLEAN);
if (!jscOptionsGetValue(option, &gValue))
return FALSE;
*value = g_value_get_boolean(&gValue);
return TRUE;
}
/**
* jsc_options_set_int:
* @option: the option identifier
* @value: the value to set
*
* Set @option as a #gint value.
*
* Returns: %TRUE if option was correctly set or %FALSE otherwise.
*
* Since: 2.24
*/
gboolean jsc_options_set_int(const char* option, gint value)
{
g_return_val_if_fail(option, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_INT);
g_value_set_int(&gValue, value);
return jscOptionsSetValue(option, &gValue);
}
/**
* jsc_options_get_int:
* @option: the option identifier
* @value: (out): return location for the option value
*
* Get @option as a #gint value.
*
* Returns: %TRUE if @value has been set or %FALSE if the option doesn't exist
*
* Since: 2.24
*/
gboolean jsc_options_get_int(const char* option, gint* value)
{
g_return_val_if_fail(option, FALSE);
g_return_val_if_fail(value, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_INT);
if (!jscOptionsGetValue(option, &gValue))
return FALSE;
*value = g_value_get_int(&gValue);
return TRUE;
}
/**
* jsc_options_set_uint:
* @option: the option identifier
* @value: the value to set
*
* Set @option as a #guint value.
*
* Returns: %TRUE if option was correctly set or %FALSE otherwise.
*
* Since: 2.24
*/
gboolean jsc_options_set_uint(const char* option, guint value)
{
g_return_val_if_fail(option, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_UINT);
g_value_set_uint(&gValue, value);
return jscOptionsSetValue(option, &gValue);
}
/**
* jsc_options_get_uint:
* @option: the option identifier
* @value: (out): return location for the option value
*
* Get @option as a #guint value.
*
* Returns: %TRUE if @value has been set or %FALSE if the option doesn't exist
*
* Since: 2.24
*/
gboolean jsc_options_get_uint(const char* option, guint* value)
{
g_return_val_if_fail(option, FALSE);
g_return_val_if_fail(value, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_UINT);
if (!jscOptionsGetValue(option, &gValue))
return FALSE;
*value = g_value_get_uint(&gValue);
return TRUE;
}
/**
* jsc_options_set_size:
* @option: the option identifier
* @value: the value to set
*
* Set @option as a #gsize value.
*
* Returns: %TRUE if option was correctly set or %FALSE otherwise.
*
* Since: 2.24
*/
gboolean jsc_options_set_size(const char* option, gsize value)
{
g_return_val_if_fail(option, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_POINTER);
g_value_set_pointer(&gValue, GSIZE_TO_POINTER(value));
return jscOptionsSetValue(option, &gValue);
}
/**
* jsc_options_get_size:
* @option: the option identifier
* @value: (out): return location for the option value
*
* Get @option as a #gsize value.
*
* Returns: %TRUE if @value has been set or %FALSE if the option doesn't exist
*
* Since: 2.24
*/
gboolean jsc_options_get_size(const char* option, gsize* value)
{
g_return_val_if_fail(option, FALSE);
g_return_val_if_fail(value, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_POINTER);
if (!jscOptionsGetValue(option, &gValue))
return FALSE;
*value = GPOINTER_TO_SIZE(g_value_get_pointer(&gValue));
return TRUE;
}
/**
* jsc_options_set_double:
* @option: the option identifier
* @value: the value to set
*
* Set @option as a #gdouble value.
*
* Returns: %TRUE if option was correctly set or %FALSE otherwise.
*
* Since: 2.24
*/
gboolean jsc_options_set_double(const char* option, gdouble value)
{
g_return_val_if_fail(option, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_DOUBLE);
g_value_set_double(&gValue, value);
return jscOptionsSetValue(option, &gValue);
}
/**
* jsc_options_get_double:
* @option: the option identifier
* @value: (out): return location for the option value
*
* Get @option as a #gdouble value.
*
* Returns: %TRUE if @value has been set or %FALSE if the option doesn't exist
*
* Since: 2.24
*/
gboolean jsc_options_get_double(const char* option, gdouble* value)
{
g_return_val_if_fail(option, FALSE);
g_return_val_if_fail(value, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_DOUBLE);
if (!jscOptionsGetValue(option, &gValue))
return FALSE;
*value = g_value_get_double(&gValue);
return TRUE;
}
/**
* jsc_options_set_string:
* @option: the option identifier
* @value: the value to set
*
* Set @option as a string.
*
* Returns: %TRUE if option was correctly set or %FALSE otherwise.
*
* Since: 2.24
*/
gboolean jsc_options_set_string(const char* option, const char* value)
{
g_return_val_if_fail(option, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_STRING);
g_value_set_string(&gValue, value);
bool success = jscOptionsSetValue(option, &gValue);
g_value_unset(&gValue);
return success;
}
/**
* jsc_options_get_string:
* @option: the option identifier
* @value: (out): return location for the option value
*
* Get @option as a string.
*
* Returns: %TRUE if @value has been set or %FALSE if the option doesn't exist
*
* Since: 2.24
*/
gboolean jsc_options_get_string(const char* option, char** value)
{
g_return_val_if_fail(option, FALSE);
g_return_val_if_fail(value, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_STRING);
if (!jscOptionsGetValue(option, &gValue))
return FALSE;
*value = g_value_dup_string(&gValue);
g_value_unset(&gValue);
return TRUE;
}
/**
* jsc_options_set_range_string:
* @option: the option identifier
* @value: the value to set
*
* Set @option as a range string. The string must be in the
* format `[!]<low>[:<high>]` where low and high are #guint values.
* Values between low and high (both included) will be considered in
* the range, unless `!` is used to invert the range.
*
* Returns: %TRUE if option was correctly set or %FALSE otherwise.
*
* Since: 2.24
*/
gboolean jsc_options_set_range_string(const char* option, const char* value)
{
g_return_val_if_fail(option, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_STRING);
g_value_set_string(&gValue, value);
bool success = jscOptionsSetValue(option, &gValue);
g_value_unset(&gValue);
return success;
}
/**
* jsc_options_get_range_string:
* @option: the option identifier
* @value: (out): return location for the option value
*
* Get @option as a range string. The string must be in the
* format `[!]<low>[:<high>]` where low and high are #guint values.
* Values between low and high (both included) will be considered in
* the range, unless `!` is used to invert the range.
*
* Returns: %TRUE if @value has been set or %FALSE if the option doesn't exist
*
* Since: 2.24
*/
gboolean jsc_options_get_range_string(const char* option, char** value)
{
g_return_val_if_fail(option, FALSE);
g_return_val_if_fail(value, FALSE);
GValue gValue = G_VALUE_INIT;
g_value_init(&gValue, G_TYPE_STRING);
if (!jscOptionsGetValue(option, &gValue))
return FALSE;
*value = g_value_dup_string(&gValue);
g_value_unset(&gValue);
return TRUE;
}
static JSCOptionType jscOptionsType(bool)
{
return JSC_OPTION_BOOLEAN;
}
static JSCOptionType jscOptionsType(int)
{
return JSC_OPTION_INT;
}
#if CPU(ADDRESS64)
static JSCOptionType jscOptionsType(unsigned)
{
return JSC_OPTION_UINT;
}
#endif
static JSCOptionType jscOptionsType(size_t)
{
return JSC_OPTION_SIZE;
}
static JSCOptionType jscOptionsType(double)
{
return JSC_OPTION_DOUBLE;
}
static JSCOptionType jscOptionsType(const char8_t*)
{
return JSC_OPTION_STRING;
}
static JSCOptionType jscOptionsType(const OptionRange&)
{
return JSC_OPTION_RANGE_STRING;
}
static JSCOptionType jscOptionsType(const OSLogType&)
{
return JSC_OPTION_UINT;
}
/**
* JSCOptionType:
* @JSC_OPTION_BOOLEAN: A #gboolean option type.
* @JSC_OPTION_INT: A #gint option type.
* @JSC_OPTION_UINT: A #guint option type.
* @JSC_OPTION_SIZE: A #gsize option type.
* @JSC_OPTION_DOUBLE: A #gdouble option type.
* @JSC_OPTION_STRING: A string option type.
* @JSC_OPTION_RANGE_STRING: A range string option type.
*
* Enum values for options types.
*
* Since: 2.24
*/
/**
* JSCOptionsFunc:
* @option: the option name
* @type: the option #JSCOptionType
* @description: (nullable): the option description, or %NULL
* @user_data: user data
*
* Function used to iterate options.
*
* Note that @description string is not localized.
*
* Returns: %TRUE to stop the iteration, or %FALSE otherwise
*
* Since: 2.24
*/
/**
* jsc_options_foreach:
* @function: (scope call): a #JSCOptionsFunc callback
* @user_data: callback user data
*
* Iterates all available options calling @function for each one. Iteration can
* stop early if @function returns %TRUE.
*
* Since: 2.24
*/
void jsc_options_foreach(JSCOptionsFunc function, gpointer userData)
{
g_return_if_fail(function);
#define VISIT_OPTION(type_, name_, defaultValue_, availability_, description_) \
if (Options::Availability::availability_ == Options::Availability::Normal \
|| Options::isAvailable(Options::name_##ID, Options::Availability::availability_)) { \
OptionsStorage::type_ defaultValue { }; \
auto optionType = jscOptionsType(defaultValue); \
if (function (#name_, optionType, description_, userData)) \
return; \
}
Options::initialize([] { });
FOR_EACH_JSC_OPTION(VISIT_OPTION)
#undef VISIT_OPTION
}
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN // GLib port
static gboolean setOptionEntry(const char* optionNameFull, const char* value, gpointer, GError** error)
{
const char* optionName = optionNameFull + 6; // Remove the --jsc- prefix.
GUniquePtr<char> option(g_strdup_printf("%s=%s", optionName, value));
if (!Options::setOption(option.get())) {
g_set_error(error, G_OPTION_ERROR, G_OPTION_ERROR_BAD_VALUE, "Failed parse value '%s' for %s", value, optionNameFull);
return FALSE;
}
return TRUE;
}
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
/**
* jsc_options_get_option_group:
*
* Create a #GOptionGroup to handle JSCOptions as command line arguments.
* The options will be exposed as command line arguments with the form
* `--jsc-<option>=<value>`.
* Each entry in the returned #GOptionGroup is configured to apply the
* corresponding option during command line parsing. Applications only need to
* pass the returned group to g_option_context_add_group(), and the rest will
* be taken care of automatically.
*
* Returns: (transfer full): a #GOptionGroup for the JSCOptions
*
* Since: 2.24
*/
GOptionGroup* jsc_options_get_option_group(void)
{
// GOptionEntry works with const strings, so we need to keep the option names around.
auto* names = new Vector<GUniquePtr<char>>;
GOptionGroup* group = g_option_group_new("jsc", _("JSC Options"), _("Show JSC Options"), names, [] (gpointer data) {
delete static_cast<Vector<GUniquePtr<char>>*>(data);
});
g_option_group_set_translation_domain(group, GETTEXT_PACKAGE);
Vector<GOptionEntry> entries;
#define REGISTER_OPTION(type_, name_, defaultValue_, availability_, description_) \
if (Options::Availability::availability_ == Options::Availability::Normal \
|| Options::isAvailable(Options::name_##ID, Options::Availability::availability_)) { \
GUniquePtr<char> name(g_strdup_printf("jsc-%s", #name_)); \
GOptionEntry entry { }; \
entry.long_name = name.get(); \
entry.arg = G_OPTION_ARG_CALLBACK; \
entry.arg_data = reinterpret_cast<gpointer>(setOptionEntry); \
entry.description = description_; \
entries.append(entry); \
names->append(WTF::move(name)); \
}
Options::initialize([] { });
FOR_EACH_JSC_OPTION(REGISTER_OPTION)
#undef REGISTER_OPTION
entries.append(GOptionEntry { });
g_option_group_add_entries(group, entries.span().data());
return group;
}
/**
* JSC_OPTIONS_USE_JIT:
*
* Allows the executable pages to be allocated for JIT and thunks if %TRUE.
* Option type: %JSC_OPTION_BOOLEAN
* Default value: %TRUE.
*
* Since: 2.24
*/
/**
* JSC_OPTIONS_USE_DFG:
*
* Allows the DFG JIT to be used if %TRUE.
* Option type: %JSC_OPTION_BOOLEAN
* Default value: %TRUE.
*
* Since: 2.24
*/
/**
* JSC_OPTIONS_USE_FTL:
*
* Allows the FTL JIT to be used if %TRUE.
* Option type: %JSC_OPTION_BOOLEAN
* Default value: %TRUE.
*
* Since: 2.24
*/
/**
* JSC_OPTIONS_USE_LLINT:
*
* Allows the LLINT to be used if %TRUE.
* Option type: %JSC_OPTION_BOOLEAN
* Default value: %TRUE.
*
* Since: 2.24
*/