diff options
Diffstat (limited to 'include/ruby/io/buffer.h')
| -rw-r--r-- | include/ruby/io/buffer.h | 51 |
1 files changed, 12 insertions, 39 deletions
diff --git a/include/ruby/io/buffer.h b/include/ruby/io/buffer.h index b044db0539..4763b88cce 100644 --- a/include/ruby/io/buffer.h +++ b/include/ruby/io/buffer.h @@ -1,5 +1,5 @@ -#ifndef RUBY_IO_BUFFER_H -#define RUBY_IO_BUFFER_H +#ifndef RUBY_IO_BUFFER_T +#define RUBY_IO_BUFFER_T 1 /** * @file * @author Samuel Williams @@ -21,20 +21,10 @@ RBIMPL_SYMBOL_EXPORT_BEGIN() // WARNING: This entire interface is experimental and may change in the future! #define RB_IO_BUFFER_EXPERIMENTAL 1 -#define RUBY_IO_BUFFER_VERSION 2 - -// The `IO::Buffer` class. RUBY_EXTERN VALUE rb_cIOBuffer; - -// The operating system page size. RUBY_EXTERN size_t RUBY_IO_BUFFER_PAGE_SIZE; - -// The default buffer size, usually a (small) multiple of the page size. -// Can be overridden by the RUBY_IO_BUFFER_DEFAULT_SIZE environment variable. RUBY_EXTERN size_t RUBY_IO_BUFFER_DEFAULT_SIZE; -// Represents the internal state of the buffer. -// More than one flag can be set at a time. enum rb_io_buffer_flags { // The memory in the buffer is owned by someone else. // More specifically, it means that someone else owns the buffer and we shouldn't try to resize it. @@ -45,9 +35,6 @@ enum rb_io_buffer_flags { // A non-private mapping is marked as external. RB_IO_BUFFER_MAPPED = 4, - // A mapped buffer that is also shared. - RB_IO_BUFFER_SHARED = 8, - // The buffer is locked and cannot be resized. // More specifically, it means we can't change the base address or size. // A buffer is typically locked before a system call that uses the data. @@ -57,45 +44,31 @@ enum rb_io_buffer_flags { RB_IO_BUFFER_PRIVATE = 64, // The buffer is read-only and cannot be modified. - RB_IO_BUFFER_READONLY = 128, - - // The buffer is backed by a file. - RB_IO_BUFFER_FILE = 256, + RB_IO_BUFFER_READONLY = 128 }; -// Represents the endian of the data types. enum rb_io_buffer_endian { - // The least significant units are put first. RB_IO_BUFFER_LITTLE_ENDIAN = 4, RB_IO_BUFFER_BIG_ENDIAN = 8, -#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ - RB_IO_BUFFER_HOST_ENDIAN = RB_IO_BUFFER_LITTLE_ENDIAN, -#elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +#if defined(WORDS_BIGENDIAN) RB_IO_BUFFER_HOST_ENDIAN = RB_IO_BUFFER_BIG_ENDIAN, -#elif defined(REG_DWORD) && REG_DWORD == REG_DWORD_LITTLE_ENDIAN +#else RB_IO_BUFFER_HOST_ENDIAN = RB_IO_BUFFER_LITTLE_ENDIAN, -#elif defined(REG_DWORD) && REG_DWORD == REG_DWORD_BIG_ENDIAN - RB_IO_BUFFER_HOST_ENDIAN = RB_IO_BUFFER_BIG_ENDIAN, #endif RB_IO_BUFFER_NETWORK_ENDIAN = RB_IO_BUFFER_BIG_ENDIAN }; VALUE rb_io_buffer_new(void *base, size_t size, enum rb_io_buffer_flags flags); -VALUE rb_io_buffer_map(VALUE io, size_t size, rb_off_t offset, enum rb_io_buffer_flags flags); +VALUE rb_io_buffer_map(VALUE io, size_t size, off_t offset, enum rb_io_buffer_flags flags); VALUE rb_io_buffer_lock(VALUE self); VALUE rb_io_buffer_unlock(VALUE self); int rb_io_buffer_try_unlock(VALUE self); - VALUE rb_io_buffer_free(VALUE self); -VALUE rb_io_buffer_free_locked(VALUE self); -// Access the internal buffer and flags. Validates the pointers. -// The points may not remain valid if the source buffer is manipulated. -// Consider using rb_io_buffer_lock if needed. -enum rb_io_buffer_flags rb_io_buffer_get_bytes(VALUE self, void **base, size_t *size); +int rb_io_buffer_get_bytes(VALUE self, void **base, size_t *size); void rb_io_buffer_get_bytes_for_reading(VALUE self, const void **base, size_t *size); void rb_io_buffer_get_bytes_for_writing(VALUE self, void **base, size_t *size); @@ -104,11 +77,11 @@ void rb_io_buffer_resize(VALUE self, size_t size); void rb_io_buffer_clear(VALUE self, uint8_t value, size_t offset, size_t length); // The length is the minimum required length. -VALUE rb_io_buffer_read(VALUE self, VALUE io, size_t length, size_t offset); -VALUE rb_io_buffer_pread(VALUE self, VALUE io, rb_off_t from, size_t length, size_t offset); -VALUE rb_io_buffer_write(VALUE self, VALUE io, size_t length, size_t offset); -VALUE rb_io_buffer_pwrite(VALUE self, VALUE io, rb_off_t from, size_t length, size_t offset); +VALUE rb_io_buffer_read(VALUE self, VALUE io, size_t length); +VALUE rb_io_buffer_pread(VALUE self, VALUE io, size_t length, off_t offset); +VALUE rb_io_buffer_write(VALUE self, VALUE io, size_t length); +VALUE rb_io_buffer_pwrite(VALUE self, VALUE io, size_t length, off_t offset); RBIMPL_SYMBOL_EXPORT_END() -#endif /* RUBY_IO_BUFFER_H */ +#endif /* RUBY_IO_BUFFER_T */ |