75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
#pragma once
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#include "../core/globals.h"
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#include "../core/support.h"
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ASMJIT_BEGIN_NAMESPACE
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//! \addtogroup asmjit_core
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//! \{
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//! Flags used by \ref CodeBuffer.
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enum class CodeBufferFlags : uint32_t {
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//! No flags.
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kNone = 0,
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//! Buffer is external (not allocated by asmjit).
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kIsExternal = 0x00000001u,
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//! Buffer is fixed (cannot be reallocated).
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kIsFixed = 0x00000002u
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};
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ASMJIT_DEFINE_ENUM_FLAGS(CodeBufferFlags)
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//! Code or data buffer.
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struct CodeBuffer {
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//! \name Members
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//! \{
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//! The content of the buffer (data).
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uint8_t* _data;
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//! Number of bytes of `data` used.
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size_t _size;
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//! Buffer capacity (in bytes).
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size_t _capacity;
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//! Buffer flags.
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CodeBufferFlags _flags;
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//! \}
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//! \name Accessors
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//! \{
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//! Returns code buffer flags.
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inline CodeBufferFlags flags() const noexcept { return _flags; }
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//! Tests whether the code buffer has the given `flag` set.
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inline bool hasFlag(CodeBufferFlags flag) const noexcept { return Support::test(_flags, flag); }
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//! Tests whether this code buffer has a fixed size.
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//!
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//! Fixed size means that the code buffer is fixed and cannot grow.
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inline bool isFixed() const noexcept { return hasFlag(CodeBufferFlags::kIsFixed); }
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//! Tests whether the data in this code buffer is external.
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//!
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//! External data can only be provided by users, it's never used by AsmJit.
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inline bool isExternal() const noexcept { return hasFlag(CodeBufferFlags::kIsExternal); }
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//! Tests whether the data in this code buffer is allocated (non-null).
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inline bool isAllocated() const noexcept { return _data != nullptr; }
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//! Tests whether the code buffer is empty.
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inline bool empty() const noexcept { return !_size; }
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//! Returns the size of the data.
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inline size_t size() const noexcept { return _size; }
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//! Returns the capacity of the data.
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inline size_t capacity() const noexcept { return _capacity; }
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//! Returns the pointer to the data the buffer references.
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inline uint8_t* data() noexcept { return _data; }
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//! \overload
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inline const uint8_t* data() const noexcept { return _data; }
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};
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ASMJIT_END_NAMESPACE
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