Ruby 3.5.0dev (2025-09-17 revision e758198846b7811f20e1c21aa971124fbb2fe103)
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A generic string type that can have various ownership semantics. More...
#include <pm_string.h>
Public Types | |
enum | { PM_STRING_CONSTANT , PM_STRING_SHARED , PM_STRING_OWNED } |
The type of the string. More... | |
Public Member Functions | |
PRISM_EXPORTED_FUNCTION pm_string_init_result_t | pm_string_mapped_init (pm_string_t *string, const char *filepath) |
Read the file indicated by the filepath parameter into source and load its contents and size into the given pm_string_t . | |
PRISM_EXPORTED_FUNCTION pm_string_init_result_t | pm_string_file_init (pm_string_t *string, const char *filepath) |
Read the file indicated by the filepath parameter into source and load its contents and size into the given pm_string_t . | |
PRISM_EXPORTED_FUNCTION size_t | pm_string_length (const pm_string_t *string) |
Returns the length associated with the string. | |
PRISM_EXPORTED_FUNCTION const uint8_t * | pm_string_source (const pm_string_t *string) |
Returns the start pointer associated with the string. | |
PRISM_EXPORTED_FUNCTION void | pm_string_free (pm_string_t *string) |
Free the associated memory of the given string. | |
Data Fields | |
const uint8_t * | source |
A pointer to the start of the string. | |
size_t | length |
The length of the string in bytes of memory. | |
enum pm_string_t:: { ... } | type |
The type of the string. | |
A generic string type that can have various ownership semantics.
Definition at line 33 of file pm_string.h.
anonymous enum |
The type of the string.
This field determines how the string should be freed.
Enumerator | |
---|---|
PM_STRING_CONSTANT | This string is a constant string, and should not be freed. |
PM_STRING_SHARED | This is a slice of another string, and should not be freed. |
PM_STRING_OWNED | This string owns its memory, and should be freed using |
Definition at line 41 of file pm_string.h.
PRISM_EXPORTED_FUNCTION pm_string_init_result_t pm_string_file_init | ( | pm_string_t * | string, |
const char * | filepath | ||
) |
Read the file indicated by the filepath parameter into source and load its contents and size into the given pm_string_t
.
The given pm_string_t
should be freed using pm_string_free
when it is no longer used.
string | The string to initialize. |
filepath | The filepath to read. |
Definition at line 210 of file pm_string.c.
PRISM_EXPORTED_FUNCTION void pm_string_free | ( | pm_string_t * | string | ) |
Free the associated memory of the given string.
string | The string to free. |
Definition at line 369 of file pm_string.c.
PRISM_EXPORTED_FUNCTION size_t pm_string_length | ( | const pm_string_t * | string | ) |
Returns the length associated with the string.
string | The string to get the length of. |
Definition at line 353 of file pm_string.c.
PRISM_EXPORTED_FUNCTION pm_string_init_result_t pm_string_mapped_init | ( | pm_string_t * | string, |
const char * | filepath | ||
) |
Read the file indicated by the filepath parameter into source and load its contents and size into the given pm_string_t
.
The given pm_string_t
should be freed using pm_string_free
when it is no longer used.
We want to use demand paging as much as possible in order to avoid having to read the entire file into memory (which could be detrimental to performance for large files). This means that if we're on windows we'll use MapViewOfFile
, on POSIX systems that have access to mmap
we'll use mmap
, and on other POSIX systems we'll use read
.
string | The string to initialize. |
filepath | The filepath to read. |
Definition at line 118 of file pm_string.c.
PRISM_EXPORTED_FUNCTION const uint8_t * pm_string_source | ( | const pm_string_t * | string | ) |
Returns the start pointer associated with the string.
string | The string to get the start pointer of. |
Definition at line 361 of file pm_string.c.
size_t pm_string_t::length |
The length of the string in bytes of memory.
Definition at line 38 of file pm_string.h.
Referenced by pm_string_free().
const uint8_t* pm_string_t::source |
A pointer to the start of the string.
Definition at line 35 of file pm_string.h.
Referenced by pm_string_ensure_owned(), and pm_string_free().
enum { ... } pm_string_t::type |
The type of the string.
This field determines how the string should be freed.
Referenced by pm_string_ensure_owned(), and pm_string_free().