-/* Cycript - Remote Execution Server and Disassembler
- * Copyright (C) 2009 Jay Freeman (saurik)
+/* Cycript - Optimizing JavaScript Compiler/Runtime
+ * Copyright (C) 2009-2015 Jay Freeman (saurik)
*/
-/* Modified BSD License {{{ */
+/* GNU Affero General Public License, Version 3 {{{ */
/*
- * Redistribution and use in source and binary
- * forms, with or without modification, are permitted
- * provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the
- * above copyright notice, this list of conditions
- * and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the
- * above copyright notice, this list of conditions
- * and the following disclaimer in the documentation
- * and/or other materials provided with the
- * distribution.
- * 3. The name of the author may not be used to endorse
- * or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
- * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+
+ * This program 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 Affero General Public License for more details.
+
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+**/
/* }}} */
-#ifndef CYPOOLING_HPP
-#define CYPOOLING_HPP
+#ifndef CYCRIPT_POOLING_HPP
+#define CYCRIPT_POOLING_HPP
+
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
+#include <algorithm>
-#include <apr_pools.h>
-#include <apr_strings.h>
+#include <stdint.h>
#include "Exception.hpp"
+#include "Local.hpp"
#include "Standard.hpp"
-_finline void *operator new(size_t size, apr_pool_t *pool) {
- return apr_palloc(pool, size);
-}
+// XXX: std::aligned_storage and alignof
+static const size_t CYAlignment(sizeof(void *));
-_finline void *operator new [](size_t size, apr_pool_t *pool) {
- return apr_palloc(pool, size);
+template <typename Type_>
+static void CYAlign(Type_ &data, size_t size) {
+ data = reinterpret_cast<Type_>((reinterpret_cast<uintptr_t>(data) + (size - 1)) & ~static_cast<uintptr_t>(size - 1));
}
+class CYPool;
+_finline void *operator new(size_t size, CYPool &pool);
+_finline void *operator new [](size_t size, CYPool &pool);
+
class CYPool {
private:
- apr_pool_t *pool_;
+ uint8_t *data_;
+ size_t size_;
+ size_t next_;
+
+ struct Cleaner {
+ Cleaner *next_;
+ void (*code_)(void *);
+ void *data_;
+
+ Cleaner(Cleaner *next, void (*code)(void *), void *data) :
+ next_(next),
+ code_(code),
+ data_(data)
+ {
+ }
+ } *cleaner_;
+
+ template <typename Type_>
+ static void delete_(void *data) {
+ reinterpret_cast<Type_ *>(data)->~Type_();
+ }
+
+ CYPool(const CYPool &);
public:
- CYPool() {
- _aprcall(apr_pool_create(&pool_, NULL));
+ CYPool(size_t next = 64) :
+ data_(NULL),
+ size_(0),
+ next_(next),
+ cleaner_(NULL)
+ {
}
~CYPool() {
- apr_pool_destroy(pool_);
+ for (Cleaner *cleaner(cleaner_); cleaner != NULL; ) {
+ Cleaner *next(cleaner->next_);
+ (*cleaner->code_)(cleaner->data_);
+ cleaner = next;
+ }
+ }
+
+ template <typename Type_>
+ Type_ *malloc(size_t size, size_t alignment = CYAlignment) {
+ uint8_t *end(data_);
+ CYAlign(end, alignment);
+ end += size;
+
+ if (size_t(end - data_) > size_) {
+ size_t need(sizeof(Cleaner));
+ CYAlign(need, alignment);
+ need += size;
+ size_ = std::max<size_t>(next_, need);
+ next_ *= 2;
+ data_ = reinterpret_cast<uint8_t *>(::malloc(size_));
+ atexit(free, data_);
+ _assert(size <= size_);
+ }
+
+ uint8_t *data(data_);
+ CYAlign(data, alignment);
+ end = data + size;
+ size_ -= end - data_;
+ data_ = end;
+ return reinterpret_cast<Type_ *>(data);
+ }
+
+ char *strdup(const char *data) {
+ if (data == NULL)
+ return NULL;
+ return memdup(data, strlen(data) + 1, 1);
}
- void Clear() {
- apr_pool_clear(pool_);
+ template <typename Type_>
+ Type_ *memdup(const Type_ *data, size_t size, size_t alignment = CYAlignment) {
+ Type_ *copy(malloc<Type_>(size, alignment));
+ memcpy(copy, data, size);
+ return copy;
}
- operator apr_pool_t *() const {
- return pool_;
+ char *strndup(const char *data, size_t size) {
+ return strmemdup(data, strnlen(data, size));
}
- char *operator ()(const char *data) const {
- return apr_pstrdup(pool_, data);
+ char *strmemdup(const char *data, size_t size) {
+ char *copy(malloc<char>(size + 1, 1));
+ memcpy(copy, data, size);
+ copy[size] = '\0';
+ return copy;
}
- char *operator ()(const char *data, size_t size) const {
- return apr_pstrndup(pool_, data, size);
+ // XXX: this could be made much more efficient
+ __attribute__((__sentinel__))
+ char *strcat(const char *data, ...) {
+ size_t size(strlen(data)); {
+ va_list args;
+ va_start(args, data);
+
+ while (const char *arg = va_arg(args, const char *))
+ size += strlen(arg);
+
+ va_end(args);
+ }
+
+ char *copy(malloc<char>(size + 1, 1)); {
+ va_list args;
+ va_start(args, data);
+
+ size_t offset(strlen(data));
+ memcpy(copy, data, offset);
+
+ while (const char *arg = va_arg(args, const char *)) {
+ size_t size(strlen(arg));
+ memcpy(copy + offset, arg, size);
+ offset += size;
+ }
+
+ va_end(args);
+ }
+
+ copy[size] = '\0';
+ return copy;
+ }
+
+ // XXX: most people using this might should use sprintf
+ char *itoa(long value) {
+ return sprintf(16, "%ld", value);
+ }
+
+ __attribute__((__format__(__printf__, 3, 4)))
+ char *sprintf(size_t size, const char *format, ...) {
+ va_list args;
+ va_start(args, format);
+ char *copy(vsprintf(size, format, args));
+ va_end(args);
+ return copy;
+ }
+
+ char *vsprintf(size_t size, const char *format, va_list args) {
+ va_list copy;
+ va_copy(copy, args);
+ char buffer[size];
+ int writ(vsnprintf(buffer, size, format, copy));
+ va_end(copy);
+ _assert(writ >= 0);
+
+ if (size_t(writ) >= size)
+ return vsprintf(writ + 1, format, args);
+ return strmemdup(buffer, writ);
+ }
+
+ void atexit(void (*code)(void *), void *data = NULL);
+
+ template <typename Type_>
+ Type_ &object() {
+ Type_ *value(new(*this) Type_());
+ atexit(&delete_<Type_>, value);
+ return *value;
}
};
+_finline void *operator new(size_t size, CYPool &pool) {
+ return pool.malloc<void>(size);
+}
+
+_finline void *operator new [](size_t size, CYPool &pool) {
+ return pool.malloc<void>(size);
+}
+
+_finline void CYPool::atexit(void (*code)(void *), void *data) {
+ cleaner_ = new(*this) Cleaner(cleaner_, code, data);
+}
+
struct CYData {
- apr_pool_t *pool_;
+ CYPool *pool_;
+ unsigned count_;
+
+ CYData() :
+ count_(1)
+ {
+ }
+
+ CYData(CYPool &pool) :
+ pool_(&pool),
+ count_(_not(unsigned))
+ {
+ }
virtual ~CYData() {
}
- static void *operator new(size_t size, apr_pool_t *pool) {
- void *data(apr_palloc(pool, size));
- reinterpret_cast<CYData *>(data)->pool_ = pool;
+ static void *operator new(size_t size, CYPool &pool) {
+ void *data(pool.malloc<void>(size));
+ reinterpret_cast<CYData *>(data)->pool_ = &pool;
return data;
}
static void *operator new(size_t size) {
- apr_pool_t *pool;
- _aprcall(apr_pool_create(&pool, NULL));
- return operator new(size, pool);
+ return operator new(size, *new CYPool());
}
static void operator delete(void *data) {
- apr_pool_destroy(reinterpret_cast<CYData *>(data)->pool_);
+ delete reinterpret_cast<CYData *>(data)->pool_;
+ }
+};
+
+template <typename Type_>
+struct CYPoolAllocator {
+ CYPool *pool_;
+
+ typedef Type_ value_type;
+ typedef value_type *pointer;
+ typedef const value_type *const_pointer;
+ typedef value_type &reference;
+ typedef const value_type &const_reference;
+ typedef std::size_t size_type;
+ typedef std::ptrdiff_t difference_type;
+
+ CYPoolAllocator() :
+ pool_(NULL)
+ {
+ }
+
+ template <typename Right_>
+ CYPoolAllocator(const CYPoolAllocator<Right_> &rhs) :
+ pool_(rhs.pool_)
+ {
+ }
+
+ pointer allocate(size_type size, const void *hint = 0) {
+ return pool_->malloc<value_type>(size);
}
+ void deallocate(pointer data, size_type size) {
+ }
+
+ void construct(pointer address, const Type_ &rhs) {
+ new(address) Type_(rhs);
+ }
+
+ void destroy(pointer address) {
+ address->~Type_();
+ }
+
+ template <typename Right_>
+ inline bool operator==(const CYPoolAllocator<Right_> &rhs) {
+ return pool_ == rhs.pool_;
+ }
+
+ template <typename Right_>
+ inline bool operator!=(const CYPoolAllocator<Right_> &rhs) {
+ return !operator==(rhs);
+ }
+
+ template <typename Right_>
+ struct rebind {
+ typedef CYPoolAllocator<Right_> other;
+ };
};
-#endif/*CYPOOLING_HPP*/
+class CYLocalPool :
+ public CYPool
+{
+ private:
+ CYLocal<CYPool> local_;
+
+ public:
+ CYLocalPool() :
+ CYPool(),
+ local_(this)
+ {
+ }
+};
+
+#define $pool \
+ (*CYLocal<CYPool>::Get())
+
+template <>
+::pthread_key_t CYLocal<CYPool>::key_;
+
+#endif/*CYCRIPT_POOLING_HPP*/
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