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authorGravatar Abseil Team <absl-team@google.com>2019-05-10 12:38:49 -0700
committerGravatar Bara Kopi <bara@kopi.com>2019-05-10 16:08:13 -0400
commit0cbdc774b97f7e80ab60dbe2ed4eaca3b2e33fc8 (patch)
tree0d5be86e52fab1aa1901898b9ea7fe6f4b79e41e /absl/container/internal/inlined_vector.h
parent27c2f6e2f3b5929fbd322b0f0ca392eb02efd9f8 (diff)
Export of internal Abseil changes.
-- ab1a58c85a462884413ec0022dc1fff19ccb8602 by Abseil Team <absl-team@google.com>: Clarified the documentation in str_format.h to say that use of absl::FormatSpec is ok for wrapper functions. Added tests that express this. PiperOrigin-RevId: 247657991 -- fef9481e58d579f1514babcb960ca60a51883fd8 by CJ Johnson <johnsoncj@google.com>: Adds exception safety tests for InlinedVector::InlinedVector() and InlinedVector::InlinedVector(const allocator_type&). PiperOrigin-RevId: 247617048 -- ef3217e1cd1e9a6ff5f2025e061b8ce3735af78f by Abseil Team <absl-team@google.com>: Internal change. PiperOrigin-RevId: 247614063 -- ed4c3345c4a04d8ec5c9e627058f17fce55925b1 by CJ Johnson <johnsoncj@google.com>: Update InlinedVector::clear() Introduces inlined_vector_exception_safety_test with the first test (clear), adds new benchmarks (for clear), and updates the implementation of clear. PiperOrigin-RevId: 247496049 -- 144a3a77c93bc8b2226da6f4b56166ee3d9868de by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 247482532 -- 286bbb89e154d5424955b644edad5fe04be487f8 by Derek Mauro <dmauro@google.com>: Add scripts to run ASAN and TSAN on CI. PiperOrigin-RevId: 247479658 GitOrigin-RevId: ab1a58c85a462884413ec0022dc1fff19ccb8602 Change-Id: Ief4c5a62587d0c59d405735df469d498aa6bf101
Diffstat (limited to 'absl/container/internal/inlined_vector.h')
-rw-r--r--absl/container/internal/inlined_vector.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/absl/container/internal/inlined_vector.h b/absl/container/internal/inlined_vector.h
index 6a5a75be..4589ce08 100644
--- a/absl/container/internal/inlined_vector.h
+++ b/absl/container/internal/inlined_vector.h
@@ -16,6 +16,7 @@
#define ABSL_CONTAINER_INTERNAL_INLINED_VECTOR_INTERNAL_H_
#include <cstddef>
+#include <cstring>
#include <iterator>
#include <memory>
#include <utility>
@@ -31,6 +32,33 @@ using IsAtLeastForwardIterator = std::is_convertible<
typename std::iterator_traits<Iterator>::iterator_category,
std::forward_iterator_tag>;
+template <typename AllocatorType, typename ValueType, typename SizeType>
+void DestroyElements(AllocatorType alloc, ValueType* destroy_first,
+ SizeType destroy_size) {
+ using AllocatorTraits = std::allocator_traits<AllocatorType>;
+
+ // Destroys `destroy_size` elements from `destroy_first`.
+ //
+ // Destroys the range
+ // [`destroy_first`, `destroy_first + destroy_size`).
+ //
+ // NOTE: We assume destructors do not throw and thus make no attempt to roll
+ // back.
+ for (SizeType i = 0; i < destroy_size; ++i) {
+ AllocatorTraits::destroy(alloc, destroy_first + i);
+ }
+
+#ifndef NDEBUG
+ // Overwrite unused memory with `0xab` so we can catch uninitialized usage.
+ //
+ // Cast to `void*` to tell the compiler that we don't care that we might be
+ // scribbling on a vtable pointer.
+ void* memory = reinterpret_cast<void*>(destroy_first);
+ size_t memory_size = sizeof(ValueType) * destroy_size;
+ std::memset(memory, 0xab, memory_size);
+#endif // NDEBUG
+}
+
template <typename T, size_t N, typename A>
class Storage {
public: