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.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
stdio.h
Detected Declarations
struct pollfdstruct fdarraystruct privenum fdarray_flagsfunction fdarray__available_entries
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
- Immediate include surface: `stdio.h`.
- Detected declarations: `struct pollfd`, `struct fdarray`, `struct priv`, `enum fdarray_flags`, `function fdarray__available_entries`.
- Atlas domain: Support Tooling And Documentation / tools.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.