tools/lib/api/fd/array.h

Source file repositories/reference/linux-study-clean/tools/lib/api/fd/array.h

File Facts

System
Linux kernel
Corpus path
tools/lib/api/fd/array.h
Extension
.h
Size
1683 bytes
Lines
60
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

struct fdarray {
	int	       nr;
	int	       nr_alloc;
	int	       nr_autogrow;
	struct pollfd *entries;
	struct priv {
		union {
			int    idx;
			void   *ptr;
		};
		unsigned int flags;
	} *priv;
};

enum fdarray_flags {
	fdarray_flag__default		= 0x00000000,
	fdarray_flag__nonfilterable	= 0x00000001,
	fdarray_flag__non_perf_event	= 0x00000002,
};

void fdarray__init(struct fdarray *fda, int nr_autogrow);
void fdarray__exit(struct fdarray *fda);

struct fdarray *fdarray__new(int nr_alloc, int nr_autogrow);
void fdarray__delete(struct fdarray *fda);

int fdarray__add(struct fdarray *fda, int fd, short revents, enum fdarray_flags flags);
int fdarray__dup_entry_from(struct fdarray *fda, int pos, struct fdarray *from);
int fdarray__poll(struct fdarray *fda, int timeout);
int fdarray__filter(struct fdarray *fda, short revents,
		    void (*entry_destructor)(struct fdarray *fda, int fd, void *arg),
		    void *arg);
int fdarray__grow(struct fdarray *fda, int extra);
int fdarray__fprintf(struct fdarray *fda, FILE *fp);

static inline int fdarray__available_entries(struct fdarray *fda)
{
	return fda->nr_alloc - fda->nr;
}

#endif /* __API_FD_ARRAY__ */

Annotation

Implementation Notes