Move most of runtime/base to libartbase/base
Enforce the layering that code in runtime/base should not depend on
runtime by separating it into libartbase. Some of the code in
runtime/base depends on the Runtime class, so it cannot be moved yet.
Also, some of the tests depend on CommonRuntimeTest, which itself needs
to be factored (in a subsequent CL).
Bug: 22322814
Test: make -j 50 checkbuild
make -j 50 test-art-host
Change-Id: I8b096c1e2542f829eb456b4b057c71421b77d7e2
diff --git a/libartbase/base/utils.h b/libartbase/base/utils.h
new file mode 100644
index 0000000..c8c5b72
--- /dev/null
+++ b/libartbase/base/utils.h
@@ -0,0 +1,263 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_LIBARTBASE_BASE_UTILS_H_
+#define ART_LIBARTBASE_BASE_UTILS_H_
+
+#include <pthread.h>
+#include <stdlib.h>
+
+#include <random>
+#include <string>
+
+#include <android-base/logging.h>
+
+#include "base/casts.h"
+#include "base/enums.h"
+#include "base/globals.h"
+#include "base/macros.h"
+#include "base/stringpiece.h"
+
+namespace art {
+
+template <typename T>
+bool ParseUint(const char *in, T* out) {
+ char* end;
+ unsigned long long int result = strtoull(in, &end, 0); // NOLINT(runtime/int)
+ if (in == end || *end != '\0') {
+ return false;
+ }
+ if (std::numeric_limits<T>::max() < result) {
+ return false;
+ }
+ *out = static_cast<T>(result);
+ return true;
+}
+
+template <typename T>
+bool ParseInt(const char* in, T* out) {
+ char* end;
+ long long int result = strtoll(in, &end, 0); // NOLINT(runtime/int)
+ if (in == end || *end != '\0') {
+ return false;
+ }
+ if (result < std::numeric_limits<T>::min() || std::numeric_limits<T>::max() < result) {
+ return false;
+ }
+ *out = static_cast<T>(result);
+ return true;
+}
+
+static inline uint32_t PointerToLowMemUInt32(const void* p) {
+ uintptr_t intp = reinterpret_cast<uintptr_t>(p);
+ DCHECK_LE(intp, 0xFFFFFFFFU);
+ return intp & 0xFFFFFFFFU;
+}
+
+// Returns a human-readable size string such as "1MB".
+std::string PrettySize(int64_t size_in_bytes);
+
+// Splits a string using the given separator character into a vector of
+// strings. Empty strings will be omitted.
+void Split(const std::string& s, char separator, std::vector<std::string>* result);
+
+// Returns the calling thread's tid. (The C libraries don't expose this.)
+pid_t GetTid();
+
+// Returns the given thread's name.
+std::string GetThreadName(pid_t tid);
+
+// Sets the name of the current thread. The name may be truncated to an
+// implementation-defined limit.
+void SetThreadName(const char* thread_name);
+
+// Reads data from "/proc/self/task/${tid}/stat".
+void GetTaskStats(pid_t tid, char* state, int* utime, int* stime, int* task_cpu);
+
+class VoidFunctor {
+ public:
+ template <typename A>
+ inline void operator() (A a ATTRIBUTE_UNUSED) const {
+ }
+
+ template <typename A, typename B>
+ inline void operator() (A a ATTRIBUTE_UNUSED, B b ATTRIBUTE_UNUSED) const {
+ }
+
+ template <typename A, typename B, typename C>
+ inline void operator() (A a ATTRIBUTE_UNUSED, B b ATTRIBUTE_UNUSED, C c ATTRIBUTE_UNUSED) const {
+ }
+};
+
+inline bool TestBitmap(size_t idx, const uint8_t* bitmap) {
+ return ((bitmap[idx / kBitsPerByte] >> (idx % kBitsPerByte)) & 0x01) != 0;
+}
+
+static inline constexpr bool ValidPointerSize(size_t pointer_size) {
+ return pointer_size == 4 || pointer_size == 8;
+}
+
+static inline const void* EntryPointToCodePointer(const void* entry_point) {
+ uintptr_t code = reinterpret_cast<uintptr_t>(entry_point);
+ // TODO: Make this Thumb2 specific. It is benign on other architectures as code is always at
+ // least 2 byte aligned.
+ code &= ~0x1;
+ return reinterpret_cast<const void*>(code);
+}
+
+using UsageFn = void (*)(const char*, ...);
+
+template <typename T>
+static void ParseIntOption(const StringPiece& option,
+ const std::string& option_name,
+ T* out,
+ UsageFn usage,
+ bool is_long_option = true) {
+ std::string option_prefix = option_name + (is_long_option ? "=" : "");
+ DCHECK(option.starts_with(option_prefix)) << option << " " << option_prefix;
+ const char* value_string = option.substr(option_prefix.size()).data();
+ int64_t parsed_integer_value = 0;
+ if (!ParseInt(value_string, &parsed_integer_value)) {
+ usage("Failed to parse %s '%s' as an integer", option_name.c_str(), value_string);
+ }
+ *out = dchecked_integral_cast<T>(parsed_integer_value);
+}
+
+template <typename T>
+static void ParseUintOption(const StringPiece& option,
+ const std::string& option_name,
+ T* out,
+ UsageFn usage,
+ bool is_long_option = true) {
+ ParseIntOption(option, option_name, out, usage, is_long_option);
+ if (*out < 0) {
+ usage("%s passed a negative value %d", option_name.c_str(), *out);
+ *out = 0;
+ }
+}
+
+void ParseDouble(const std::string& option,
+ char after_char,
+ double min,
+ double max,
+ double* parsed_value,
+ UsageFn Usage);
+
+#if defined(__BIONIC__)
+struct Arc4RandomGenerator {
+ typedef uint32_t result_type;
+ static constexpr uint32_t min() { return std::numeric_limits<uint32_t>::min(); }
+ static constexpr uint32_t max() { return std::numeric_limits<uint32_t>::max(); }
+ uint32_t operator() () { return arc4random(); }
+};
+using RNG = Arc4RandomGenerator;
+#else
+using RNG = std::random_device;
+#endif
+
+template <typename T>
+static T GetRandomNumber(T min, T max) {
+ CHECK_LT(min, max);
+ std::uniform_int_distribution<T> dist(min, max);
+ RNG rng;
+ return dist(rng);
+}
+
+// Sleep forever and never come back.
+NO_RETURN void SleepForever();
+
+inline void FlushInstructionCache(char* begin, char* end) {
+ __builtin___clear_cache(begin, end);
+}
+
+inline void FlushDataCache(char* begin, char* end) {
+ // Same as FlushInstructionCache for lack of other builtin. __builtin___clear_cache
+ // flushes both caches.
+ __builtin___clear_cache(begin, end);
+}
+
+template <typename T>
+constexpr PointerSize ConvertToPointerSize(T any) {
+ if (any == 4 || any == 8) {
+ return static_cast<PointerSize>(any);
+ } else {
+ LOG(FATAL);
+ UNREACHABLE();
+ }
+}
+
+// Returns a type cast pointer if object pointed to is within the provided bounds.
+// Otherwise returns nullptr.
+template <typename T>
+inline static T BoundsCheckedCast(const void* pointer,
+ const void* lower,
+ const void* upper) {
+ const uint8_t* bound_begin = static_cast<const uint8_t*>(lower);
+ const uint8_t* bound_end = static_cast<const uint8_t*>(upper);
+ DCHECK(bound_begin <= bound_end);
+
+ T result = reinterpret_cast<T>(pointer);
+ const uint8_t* begin = static_cast<const uint8_t*>(pointer);
+ const uint8_t* end = begin + sizeof(*result);
+ if (begin < bound_begin || end > bound_end || begin > end) {
+ return nullptr;
+ }
+ return result;
+}
+
+template <typename T, size_t size>
+constexpr size_t ArrayCount(const T (&)[size]) {
+ return size;
+}
+
+// Return -1 if <, 0 if ==, 1 if >.
+template <typename T>
+inline static int32_t Compare(T lhs, T rhs) {
+ return (lhs < rhs) ? -1 : ((lhs == rhs) ? 0 : 1);
+}
+
+// Return -1 if < 0, 0 if == 0, 1 if > 0.
+template <typename T>
+inline static int32_t Signum(T opnd) {
+ return (opnd < 0) ? -1 : ((opnd == 0) ? 0 : 1);
+}
+
+template <typename Func, typename... Args>
+static inline void CheckedCall(const Func& function, const char* what, Args... args) {
+ int rc = function(args...);
+ if (UNLIKELY(rc != 0)) {
+ errno = rc;
+ PLOG(FATAL) << "Checked call failed for " << what;
+ }
+}
+
+// Hash bytes using a relatively fast hash.
+static inline size_t HashBytes(const uint8_t* data, size_t len) {
+ size_t hash = 0x811c9dc5;
+ for (uint32_t i = 0; i < len; ++i) {
+ hash = (hash * 16777619) ^ data[i];
+ }
+ hash += hash << 13;
+ hash ^= hash >> 7;
+ hash += hash << 3;
+ hash ^= hash >> 17;
+ hash += hash << 5;
+ return hash;
+}
+
+} // namespace art
+
+#endif // ART_LIBARTBASE_BASE_UTILS_H_