MemoryBuffer with copy‐on‐write access to a writable backing store.
Synopsis
Declared in <llvm/Support/MemoryBuffer.h>
class WritableMemoryBuffer
: public MemoryBufferBase Classes
Name |
Description |
This interface provides simple read‐only access to a block of memory, and provides simple methods for reading files and standard input into a memory buffer. In addition to basic access to the characters in the file, this interface guarantees you can read one character past the end of the file, and that this character will read as '0'. |
Enums
Name |
Description |
The kind of memory backing used to support the MemoryBuffer. |
Member Functions
Name |
Description |
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Deleted copy assignment. |
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Advise the kernel that a read‐only mmap buffer is unused soon. |
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Return an identifier for this buffer, typically the filename it was read from. |
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Return information on the memory mechanism used to support the MemoryBuffer. |
Number of bytes in the buffer (end minus start). |
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Return a lightweight reference to this buffer's data and identifier. |
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Advise the kernel that accesses to this mmap buffer will be random. |
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Advise the kernel to prefetch this mmap buffer into memory. |
Static Member Functions
Name |
Description |
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Read the specified file into a MemoryBuffer until EOF. |
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Open the specified file as a MemoryBuffer, or open stdin if the Filename is "‐". |
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Map a subrange of the specified file as a WritableMemoryBuffer. |
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Open the specified memory range as a MemoryBuffer, copying the contents and taking ownership of it. |
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Allocate a new zero‐initialized MemoryBuffer of the specified size. |
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Allocate a new uninitialized MemoryBuffer of the specified size. |
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Given an already‐open file descriptor, read the file and return a MemoryBuffer. |
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Map a slice of an already‐open file into a MemoryBuffer. |
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Read all of stdin into a file buffer, and return it. |
Using Declarations
Name |
Description |
Inherit the const getBuffer() overload from MemoryBuffer. |
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Inherit getBufferEnd() from MemoryBuffer. |
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Inherit getBufferStart() from MemoryBuffer. |
Protected Member Functions
Name |
Description |
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Default‐construct an uninitialized writable memory buffer. |
Initialize buffer pointers and whether a null terminator is required. |
Non-Member Functions
Name |
Description |
Create a pass that parses a basic block sections profile from |
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Convert a MemoryBuffer pointer to an LLVMMemoryBufferRef. |
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