Context Navigation

iocall.cfa@ 1095ccd

Visit:

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast new-ast-unique-expr pthread-emulation qualifiedEnum

Last change on this file since 1095ccd was 4998155, checked in by Thierry Delisle <tdelisle@…>, 5 years ago
I/O now uses onshot semaphore instead of raw park/unpark. I/O now uses linux/types.h types instead of stdint.h types
Property mode set to `100644`
File size: 19.5 KB

Rev	Line
[31bb2e1]	1	//
	2	// Cforall Version 1.0.0 Copyright (C) 2020 University of Waterloo
	3	//
	4	// The contents of this file are covered under the licence agreement in the
	5	// file "LICENCE" distributed with Cforall.
	6	//
	7	// iocall.cfa --
	8	//
	9	// Author : Thierry Delisle
	10	// Created On : Wed Jul 1 14:51:00 2020
	11	// Last Modified By :
	12	// Last Modified On :
	13	// Update Count :
	14	//
	15
[3e2b9c9]	16	#define __cforall_thread__
	17
[5877b3e]	18	#include "bits/defs.hfa"
[1a39a5a]	19	#include "kernel.hfa"
[5877b3e]	20
[4b84e35]	21	//=============================================================================================
	22	// I/O uring backend
	23	//=============================================================================================
	24
[5751a56]	25	#if defined(CFA_HAVE_LINUX_IO_URING_H)
[3e2b9c9]	26	#include <assert.h>
[31bb2e1]	27	#include <stdint.h>
[f00b26d4]	28	#include <errno.h>
[31bb2e1]	29	#include <linux/io_uring.h>
	30
[3e2b9c9]	31	#include "kernel/fwd.hfa"
	32	#include "io/types.hfa"
[31bb2e1]	33
[4998155]	34	extern [* struct io_uring_sqe, __u32] __submit_alloc( struct __io_data & ring, __u64 data );
	35	extern void __submit( struct io_context * ctx, __u32 idx ) __attribute__((nonnull (1)));
[31bb2e1]	36
[4998155]	37	static inline void ?{}(struct io_uring_sqe & this, __u8 opcode, int fd) {
[4b84e35]	38	this.opcode = opcode;
	39	#if !defined(IOSQE_ASYNC)
	40	this.flags = 0;
	41	#else
	42	this.flags = IOSQE_ASYNC;
	43	#endif
	44	this.ioprio = 0;
	45	this.fd = fd;
	46	this.off = 0;
	47	this.addr = 0;
	48	this.len = 0;
	49	this.rw_flags = 0;
	50	this.__pad2[0] = this.__pad2[1] = this.__pad2[2] = 0;
	51	}
	52
[4998155]	53	static inline void ?{}(struct io_uring_sqe & this, __u8 opcode, int fd, void * addr, __u32 len, __u64 off ) {
[4b84e35]	54	(this){ opcode, fd };
	55	this.off = off;
[4998155]	56	this.addr = (__u64)(uintptr_t)addr;
[4b84e35]	57	this.len = len;
	58	}
[31bb2e1]	59
[3e2b9c9]	60	static inline io_context * __get_io_context( void ) {
	61	cluster * cltr = active_cluster();
	62	/* paranoid */ verifyf( cltr, "No active cluster for io operation\n");
	63	assertf( cltr->io.cnt > 0, "Cluster %p has no default io contexts and no context was specified\n", cltr );
	64	/* paranoid */ verifyf( cltr->io.ctxs, "default io contexts for cluster %p are missing\n", cltr);
	65	return &cltr->io.ctxs[ __tls_rand() % cltr->io.cnt ];
	66	}
[f00b26d4]	67
	68
[97c3159]	69	#if defined(CFA_HAVE_IOSQE_FIXED_FILE) && defined(CFA_HAVE_IOSQE_IO_DRAIN) && defined(CFA_HAVE_IOSQE_ASYNC)
[f00b26d4]	70	#define REGULAR_FLAGS (IOSQE_FIXED_FILE \| IOSQE_IO_DRAIN \| IOSQE_ASYNC)
	71	#elif defined(CFA_HAVE_IOSQE_FIXED_FILE) && defined(CFA_HAVE_IOSQE_ASYNC)
	72	#define REGULAR_FLAGS (IOSQE_FIXED_FILE \| IOSQE_ASYNC)
[97c3159]	73	#elif defined(CFA_HAVE_IOSQE_FIXED_FILE) && defined(CFA_HAVE_IOSQE_IO_DRAIN)
[f00b26d4]	74	#define REGULAR_FLAGS (IOSQE_FIXED_FILE \| IOSQE_IO_DRAIN)
[97c3159]	75	#elif defined(CFA_HAVE_IOSQE_IO_DRAIN) && defined(CFA_HAVE_IOSQE_ASYNC)
[f00b26d4]	76	#define REGULAR_FLAGS (IOSQE_IO_DRAIN \| IOSQE_ASYNC)
	77	#elif defined(CFA_HAVE_IOSQE_FIXED_FILE)
	78	#define REGULAR_FLAGS (IOSQE_FIXED_FILE)
[97c3159]	79	#elif defined(CFA_HAVE_IOSQE_IO_DRAIN)
[f00b26d4]	80	#define REGULAR_FLAGS (IOSQE_IO_DRAIN)
[97c3159]	81	#elif defined(CFA_HAVE_IOSQE_ASYNC)
[f00b26d4]	82	#define REGULAR_FLAGS (IOSQE_ASYNC)
	83	#else
	84	#define REGULAR_FLAGS (0)
	85	#endif
	86
	87	#if defined(CFA_HAVE_IOSQE_IO_LINK) && defined(CFA_HAVE_IOSQE_IO_HARDLINK)
	88	#define LINK_FLAGS (IOSQE_IO_LINK \| IOSQE_IO_HARDLINK)
	89	#elif defined(CFA_HAVE_IOSQE_IO_LINK)
	90	#define LINK_FLAGS (IOSQE_IO_LINK)
	91	#elif defined(CFA_HAVE_IOSQE_IO_HARDLINK)
	92	#define LINK_FLAGS (IOSQE_IO_HARDLINK)
	93	#else
	94	#define LINK_FLAGS (0)
	95	#endif
	96
	97	#if defined(CFA_HAVE_SPLICE_F_FD_IN_FIXED)
	98	#define SPLICE_FLAGS (SPLICE_F_FD_IN_FIXED)
	99	#else
	100	#define SPLICE_FLAGS (0)
	101	#endif
	102
[31bb2e1]	103	#define __submit_prelude \
[f00b26d4]	104	if( 0 != (submit_flags & LINK_FLAGS) ) { errno = ENOTSUP; return -1; } \
	105	(void)timeout; (void)cancellation; \
	106	if( !context ) context = __get_io_context(); \
[4998155]	107	__io_user_data_t data = { 0 }; \
[f00b26d4]	108	struct __io_data & ring = *context->thrd.ring; \
[31bb2e1]	109	struct io_uring_sqe * sqe; \
[4998155]	110	__u32 idx; \
	111	__u8 sflags = REGULAR_FLAGS & submit_flags; \
	112	[sqe, idx] = __submit_alloc( ring, (__u64)(uintptr_t)&data ); \
[2606a03]	113	sqe->flags = sflags;
[31bb2e1]	114
	115	#define __submit_wait \
	116	/__cfaabi_bits_print_safe( STDERR_FILENO, "Preparing user data %p for %p\n", &data, data.thrd );/ \
[4998155]	117	verify( sqe->user_data == (__u64)(uintptr_t)&data ); \
[f00b26d4]	118	__submit( context, idx ); \
[4998155]	119	wait( data.sem ); \
[f00b26d4]	120	if( data.result < 0 ) { \
	121	errno = -data.result; \
	122	return -1; \
	123	} \
[31bb2e1]	124	return data.result;
[4b84e35]	125	#endif
[31bb2e1]	126
[4b84e35]	127	//=============================================================================================
	128	// I/O Forwards
	129	//=============================================================================================
[f00b26d4]	130	#include <time.hfa>
[31bb2e1]	131
[4b84e35]	132	// Some forward declarations
[cf48a14]	133	#include <errno.h>
[4b84e35]	134	#include <unistd.h>
	135
	136	extern "C" {
	137	#include <sys/types.h>
	138	#include <sys/socket.h>
	139	#include <sys/syscall.h>
	140
	141	#if defined(HAVE_PREADV2)
	142	struct iovec;
	143	extern ssize_t preadv2 (int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
	144	#endif
	145	#if defined(HAVE_PWRITEV2)
	146	struct iovec;
	147	extern ssize_t pwritev2(int fd, const struct iovec *iov, int iovcnt, off_t offset, int flags);
	148	#endif
	149
	150	extern int fsync(int fd);
[4998155]	151
	152	typedef __off64_t off_t;
	153	typedef __off64_t off64_t;
	154	extern int sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags);
[4b84e35]	155
	156	struct msghdr;
	157	struct sockaddr;
	158	extern ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
	159	extern ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
	160	extern ssize_t send(int sockfd, const void *buf, size_t len, int flags);
	161	extern ssize_t recv(int sockfd, void *buf, size_t len, int flags);
	162	extern int accept4(int sockfd, struct sockaddr addr, socklen_t addrlen, int flags);
	163	extern int connect(int sockfd, const struct sockaddr *addr, socklen_t addrlen);
	164
[4998155]	165	extern int fallocate(int fd, int mode, off_t offset, off_t len);
	166	extern int posix_fadvise(int fd, off_t offset, off_t len, int advice);
[4b84e35]	167	extern int madvise(void *addr, size_t length, int advice);
	168
	169	extern int openat(int dirfd, const char *pathname, int flags, mode_t mode);
	170	extern int close(int fd);
	171
	172	extern ssize_t read (int fd, void *buf, size_t count);
[0a92c78]	173
	174	extern ssize_t splice(int fd_in, loff_t off_in, int fd_out, loff_t off_out, size_t len, unsigned int flags);
	175	extern ssize_t tee(int fd_in, int fd_out, size_t len, unsigned int flags);
[4b84e35]	176	}
[31bb2e1]	177
[4b84e35]	178	//=============================================================================================
	179	// I/O Interface
	180	//=============================================================================================
[31bb2e1]	181
[4b84e35]	182	//-----------------------------------------------------------------------------
	183	// Asynchronous operations
	184	#if defined(HAVE_PREADV2)
[f00b26d4]	185	ssize_t cfa_preadv2(int fd, const struct iovec iov, int iovcnt, off_t offset, int flags, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	186	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_READV)
[20ab637]	187	return preadv2(fd, iov, iovcnt, offset, flags);
	188	#else
	189	__submit_prelude
	190
[2606a03]	191	sqe->opcode = IORING_OP_READV;
	192	sqe->ioprio = 0;
	193	sqe->fd = fd;
	194	sqe->off = offset;
[4998155]	195	sqe->addr = (__u64)iov;
[2606a03]	196	sqe->len = iovcnt;
	197	sqe->rw_flags = 0;
	198	sqe->__pad2[0] = sqe->__pad2[1] = sqe->__pad2[2] = 0;
[20ab637]	199
	200	__submit_wait
	201	#endif
	202	}
[4b84e35]	203	#endif
[31bb2e1]	204
[4b84e35]	205	#if defined(HAVE_PWRITEV2)
[f00b26d4]	206	ssize_t cfa_pwritev2(int fd, const struct iovec iov, int iovcnt, off_t offset, int flags, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	207	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_WRITEV)
[4b84e35]	208	return pwritev2(fd, iov, iovcnt, offset, flags);
[31bb2e1]	209	#else
	210	__submit_prelude
	211
[4998155]	212	sqe->opcode = IORING_OP_WRITEV;
	213	sqe->ioprio = 0;
	214	sqe->fd = fd;
	215	sqe->off = offset;
	216	sqe->addr = (__u64)iov;
	217	sqe->len = iovcnt;
	218	sqe->rw_flags = 0;
	219	sqe->__pad2[0] = sqe->__pad2[1] = sqe->__pad2[2] = 0;
[31bb2e1]	220
	221	__submit_wait
	222	#endif
	223	}
[4b84e35]	224	#endif
[31bb2e1]	225
[f00b26d4]	226	int cfa_fsync(int fd, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {
[5751a56]	227	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_FSYNC)
[4b84e35]	228	return fsync(fd);
	229	#else
	230	__submit_prelude
[31bb2e1]	231
[4998155]	232	sqe->opcode = IORING_OP_FSYNC;
	233	sqe->ioprio = 0;
	234	sqe->fd = fd;
	235	sqe->off = 0;
	236	sqe->addr = 0;
	237	sqe->len = 0;
	238	sqe->rw_flags = 0;
	239	sqe->__pad2[0] = sqe->__pad2[1] = sqe->__pad2[2] = 0;
[31bb2e1]	240
[4b84e35]	241	__submit_wait
	242	#endif
	243	}
[31bb2e1]	244
[4998155]	245	int cfa_sync_file_range(int fd, off64_t offset, off64_t nbytes, unsigned int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {
[5751a56]	246	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_SYNC_FILE_RANGE)
[4b84e35]	247	return sync_file_range(fd, offset, nbytes, flags);
	248	#else
	249	__submit_prelude
[31bb2e1]	250
[4b84e35]	251	(*sqe){ IORING_OP_SYNC_FILE_RANGE, fd };
	252	sqe->off = offset;
	253	sqe->len = nbytes;
	254	sqe->sync_range_flags = flags;
[31bb2e1]	255
[4b84e35]	256	__submit_wait
	257	#endif
	258	}
[31bb2e1]	259
	260
[f00b26d4]	261	ssize_t cfa_sendmsg(int sockfd, const struct msghdr msg, int flags, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	262	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_SENDMSG)
[4b84e35]	263	return sendmsg(sockfd, msg, flags);
	264	#else
	265	__submit_prelude
[31bb2e1]	266
[4b84e35]	267	(*sqe){ IORING_OP_SENDMSG, sockfd, msg, 1, 0 };
	268	sqe->msg_flags = flags;
[31bb2e1]	269
[4b84e35]	270	__submit_wait
	271	#endif
	272	}
[31bb2e1]	273
[f00b26d4]	274	ssize_t cfa_recvmsg(int sockfd, struct msghdr msg, int flags, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	275	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_RECVMSG)
[4b84e35]	276	return recvmsg(sockfd, msg, flags);
	277	#else
	278	__submit_prelude
[31bb2e1]	279
[4b84e35]	280	(*sqe){ IORING_OP_RECVMSG, sockfd, msg, 1, 0 };
	281	sqe->msg_flags = flags;
[31bb2e1]	282
[4b84e35]	283	__submit_wait
	284	#endif
	285	}
[31bb2e1]	286
[f00b26d4]	287	ssize_t cfa_send(int sockfd, const void buf, size_t len, int flags, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	288	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_SEND)
[4b84e35]	289	return send( sockfd, buf, len, flags );
	290	#else
	291	__submit_prelude
[31bb2e1]	292
[4b84e35]	293	(*sqe){ IORING_OP_SEND, sockfd };
[4998155]	294	sqe->addr = (__u64)buf;
[4b84e35]	295	sqe->len = len;
	296	sqe->msg_flags = flags;
[31bb2e1]	297
[4b84e35]	298	__submit_wait
	299	#endif
	300	}
[31bb2e1]	301
[f00b26d4]	302	ssize_t cfa_recv(int sockfd, void buf, size_t len, int flags, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	303	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_RECV)
[4b84e35]	304	return recv( sockfd, buf, len, flags );
	305	#else
	306	__submit_prelude
[31bb2e1]	307
[4b84e35]	308	(*sqe){ IORING_OP_RECV, sockfd };
[4998155]	309	sqe->addr = (__u64)buf;
[4b84e35]	310	sqe->len = len;
	311	sqe->msg_flags = flags;
[31bb2e1]	312
[4b84e35]	313	__submit_wait
	314	#endif
	315	}
[31bb2e1]	316
[f00b26d4]	317	int cfa_accept4(int sockfd, struct sockaddr addr, socklen_t addrlen, int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {
[5751a56]	318	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_ACCEPT)
[4b84e35]	319	return accept4( sockfd, addr, addrlen, flags );
	320	#else
	321	__submit_prelude
[31bb2e1]	322
[4b84e35]	323	(*sqe){ IORING_OP_ACCEPT, sockfd };
[4998155]	324	sqe->addr = (__u64)addr;
	325	sqe->addr2 = (__u64)addrlen;
[4b84e35]	326	sqe->accept_flags = flags;
[31bb2e1]	327
[4b84e35]	328	__submit_wait
	329	#endif
	330	}
[31bb2e1]	331
[f00b26d4]	332	int cfa_connect(int sockfd, const struct sockaddr addr, socklen_t addrlen, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	333	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_CONNECT)
[4b84e35]	334	return connect( sockfd, addr, addrlen );
	335	#else
	336	__submit_prelude
[31bb2e1]	337
[4b84e35]	338	(*sqe){ IORING_OP_CONNECT, sockfd };
[4998155]	339	sqe->addr = (__u64)addr;
	340	sqe->off = (__u64)addrlen;
[31bb2e1]	341
[4b84e35]	342	__submit_wait
	343	#endif
	344	}
[31bb2e1]	345
[4998155]	346	int cfa_fallocate(int fd, int mode, off_t offset, off_t len, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {
[5751a56]	347	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_FALLOCATE)
[4b84e35]	348	return fallocate( fd, mode, offset, len );
	349	#else
	350	__submit_prelude
[31bb2e1]	351
[85eafc5]	352	#warning FALLOCATE documentation for linux 5.7 is incorrect, and does not handle mode
[3f850d7]	353
[4b84e35]	354	(*sqe){ IORING_OP_FALLOCATE, fd };
	355	sqe->off = offset;
[3f850d7]	356	sqe->len = mode;
	357	sqe->addr = len;
[31bb2e1]	358
[4b84e35]	359	__submit_wait
	360	#endif
	361	}
[31bb2e1]	362
[4998155]	363	int cfa_fadvise(int fd, off_t offset, off_t len, int advice, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {
[5751a56]	364	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_FADVISE)
[4b84e35]	365	return posix_fadvise( fd, offset, len, advice );
	366	#else
	367	__submit_prelude
[31bb2e1]	368
[4b84e35]	369	(*sqe){ IORING_OP_FADVISE, fd };
[4998155]	370	sqe->off = (__u64)offset;
[3f850d7]	371	sqe->len = len;
[4b84e35]	372	sqe->fadvise_advice = advice;
[31bb2e1]	373
[4b84e35]	374	__submit_wait
	375	#endif
	376	}
[31bb2e1]	377
[f00b26d4]	378	int cfa_madvise(void addr, size_t length, int advice, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	379	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_MADVISE)
[4b84e35]	380	return madvise( addr, length, advice );
	381	#else
	382	__submit_prelude
[31bb2e1]	383
[4b84e35]	384	(*sqe){ IORING_OP_MADVISE, 0 };
[4998155]	385	sqe->addr = (__u64)addr;
[4b84e35]	386	sqe->len = length;
	387	sqe->fadvise_advice = advice;
[31bb2e1]	388
[4b84e35]	389	__submit_wait
	390	#endif
	391	}
[31bb2e1]	392
[f00b26d4]	393	int cfa_openat(int dirfd, const char pathname, int flags, mode_t mode, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	394	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_OPENAT)
[4b84e35]	395	return openat( dirfd, pathname, flags, mode );
	396	#else
	397	__submit_prelude
[31bb2e1]	398
[4b84e35]	399	(*sqe){ IORING_OP_OPENAT, dirfd };
[4998155]	400	sqe->addr = (__u64)pathname;
[4b84e35]	401	sqe->open_flags = flags;
[3f850d7]	402	sqe->len = mode;
[31bb2e1]	403
[4b84e35]	404	__submit_wait
	405	#endif
	406	}
[31bb2e1]	407
[f00b26d4]	408	int cfa_close(int fd, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {
[5751a56]	409	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_CLOSE)
[4b84e35]	410	return close( fd );
	411	#else
	412	__submit_prelude
[31bb2e1]	413
[4b84e35]	414	(*sqe){ IORING_OP_CLOSE, fd };
	415
	416	__submit_wait
	417	#endif
	418	}
[31bb2e1]	419
[efc171d1]	420	// Forward declare in case it is not supported
	421	struct statx;
[f00b26d4]	422	int cfa_statx(int dirfd, const char pathname, int flags, unsigned int mask, struct statx statxbuf, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {
[5751a56]	423	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_STATX)
[5db836e]	424	#if defined(__NR_statx)
	425	return syscall( __NR_statx, dirfd, pathname, flags, mask, statxbuf );
	426	#else
	427	errno = ENOTSUP;
	428	return -1;
	429	#endif
[519f11c]	430	#else
	431	__submit_prelude
	432
[4998155]	433	(*sqe){ IORING_OP_STATX, dirfd, pathname, mask, (__u64)statxbuf };
[f00b26d4]	434	sqe->statx_flags = flags;
[519f11c]	435
	436	__submit_wait
	437	#endif
	438	}
	439
[f00b26d4]	440	ssize_t cfa_read(int fd, void buf, size_t count, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	441	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_READ)
[4b84e35]	442	return read( fd, buf, count );
	443	#else
	444	__submit_prelude
	445
	446	(*sqe){ IORING_OP_READ, fd, buf, count, 0 };
	447
	448	__submit_wait
	449	#endif
	450	}
	451
[f00b26d4]	452	ssize_t cfa_write(int fd, void buf, size_t count, int submit_flags, Duration timeout, io_cancellation cancellation, io_context * context) {
[5751a56]	453	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_WRITE)
[4b84e35]	454	return read( fd, buf, count );
	455	#else
	456	__submit_prelude
	457
	458	(*sqe){ IORING_OP_WRITE, fd, buf, count, 0 };
	459
	460	__submit_wait
	461	#endif
	462	}
	463
[f00b26d4]	464	ssize_t cfa_splice(int fd_in, loff_t off_in, int fd_out, loff_t off_out, size_t len, unsigned int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {
[5751a56]	465	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_SPLICE)
	466	return splice( fd_in, off_in, fd_out, off_out, len, flags );
	467	#else
	468	__submit_prelude
	469
[3f850d7]	470	(*sqe){ IORING_OP_SPLICE, fd_out };
	471	if( off_out ) {
	472	sqe->off = *off_out;
	473	}
	474	else {
[4998155]	475	sqe->off = (__u64)-1;
[3f850d7]	476	}
	477	sqe->len = len;
[5751a56]	478	sqe->splice_fd_in = fd_in;
[3f850d7]	479	if( off_in ) {
	480	sqe->splice_off_in = *off_in;
	481	}
	482	else {
[4998155]	483	sqe->splice_off_in = (__u64)-1;
[3f850d7]	484	}
[f00b26d4]	485	sqe->splice_flags = flags \| (SPLICE_FLAGS & submit_flags);
[5751a56]	486
	487	__submit_wait
	488	#endif
	489	}
	490
[f00b26d4]	491	ssize_t cfa_tee(int fd_in, int fd_out, size_t len, unsigned int flags, int submit_flags, Duration timeout, io_cancellation * cancellation, io_context * context) {
[5751a56]	492	#if !defined(CFA_HAVE_LINUX_IO_URING_H) \|\| !defined(CFA_HAVE_IORING_OP_TEE)
[0a92c78]	493	return tee( fd_in, fd_out, len, flags );
	494	#else
	495	__submit_prelude
	496
	497	(*sqe){ IORING_OP_TEE, fd_out, 0p, len, 0 };
	498	sqe->splice_fd_in = fd_in;
[f00b26d4]	499	sqe->splice_flags = flags \| (SPLICE_FLAGS & submit_flags);
[0a92c78]	500
	501	__submit_wait
	502	#endif
	503	}
	504
[4b84e35]	505	//-----------------------------------------------------------------------------
	506	// Check if a function is asynchronous
	507
	508	// Macro magic to reduce the size of the following switch case
	509	#define IS_DEFINED_APPLY(f, ...) f(__VA_ARGS__)
	510	#define IS_DEFINED_SECOND(first, second, ...) second
	511	#define IS_DEFINED_TEST(expansion) _CFA_IO_FEATURE_##expansion
	512	#define IS_DEFINED(macro) IS_DEFINED_APPLY( IS_DEFINED_SECOND,IS_DEFINED_TEST(macro) false, true)
	513
	514	bool has_user_level_blocking( fptr_t func ) {
[5751a56]	515	#if defined(CFA_HAVE_LINUX_IO_URING_H)
[4b84e35]	516	#if defined(HAVE_PREADV2)
	517	if( /func == (fptr_t)preadv2 \|\| /
	518	func == (fptr_t)cfa_preadv2 )
[5751a56]	519	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_READV ,
	520	return IS_DEFINED(CFA_HAVE_IORING_OP_READV);
[31bb2e1]	521	#endif
	522
[4b84e35]	523	#if defined(HAVE_PWRITEV2)
	524	if( /func == (fptr_t)pwritev2 \|\| /
	525	func == (fptr_t)cfa_pwritev2 )
[5751a56]	526	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_WRITEV ,
	527	return IS_DEFINED(CFA_HAVE_IORING_OP_WRITEV);
[31bb2e1]	528	#endif
	529
[4b84e35]	530	if( /func == (fptr_t)fsync \|\| /
	531	func == (fptr_t)cfa_fsync )
[5751a56]	532	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_FSYNC ,
	533	return IS_DEFINED(CFA_HAVE_IORING_OP_FSYNC);
[4b84e35]	534
	535	if( /func == (fptr_t)ync_file_range \|\| /
	536	func == (fptr_t)cfa_sync_file_range )
[5751a56]	537	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_SYNC_FILE_RANGE ,
	538	return IS_DEFINED(CFA_HAVE_IORING_OP_SYNC_FILE_RANGE);
[4b84e35]	539
	540	if( /func == (fptr_t)sendmsg \|\| /
	541	func == (fptr_t)cfa_sendmsg )
[5751a56]	542	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_SENDMSG ,
	543	return IS_DEFINED(CFA_HAVE_IORING_OP_SENDMSG);
[4b84e35]	544
	545	if( /func == (fptr_t)recvmsg \|\| /
	546	func == (fptr_t)cfa_recvmsg )
[5751a56]	547	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_RECVMSG ,
	548	return IS_DEFINED(CFA_HAVE_IORING_OP_RECVMSG);
[4b84e35]	549
	550	if( /func == (fptr_t)send \|\| /
	551	func == (fptr_t)cfa_send )
[5751a56]	552	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_SEND ,
	553	return IS_DEFINED(CFA_HAVE_IORING_OP_SEND);
[4b84e35]	554
	555	if( /func == (fptr_t)recv \|\| /
	556	func == (fptr_t)cfa_recv )
[5751a56]	557	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_RECV ,
	558	return IS_DEFINED(CFA_HAVE_IORING_OP_RECV);
[4b84e35]	559
	560	if( /func == (fptr_t)accept4 \|\| /
	561	func == (fptr_t)cfa_accept4 )
[5751a56]	562	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_ACCEPT ,
	563	return IS_DEFINED(CFA_HAVE_IORING_OP_ACCEPT);
[4b84e35]	564
	565	if( /func == (fptr_t)connect \|\| /
	566	func == (fptr_t)cfa_connect )
[5751a56]	567	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_CONNECT ,
	568	return IS_DEFINED(CFA_HAVE_IORING_OP_CONNECT);
[4b84e35]	569
	570	if( /func == (fptr_t)fallocate \|\| /
	571	func == (fptr_t)cfa_fallocate )
[5751a56]	572	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_FALLOCATE ,
	573	return IS_DEFINED(CFA_HAVE_IORING_OP_FALLOCATE);
[4b84e35]	574
	575	if( /func == (fptr_t)posix_fadvise \|\| /
	576	func == (fptr_t)cfa_fadvise )
[5751a56]	577	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_FADVISE ,
	578	return IS_DEFINED(CFA_HAVE_IORING_OP_FADVISE);
[4b84e35]	579
	580	if( /func == (fptr_t)madvise \|\| /
	581	func == (fptr_t)cfa_madvise )
[5751a56]	582	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_MADVISE ,
	583	return IS_DEFINED(CFA_HAVE_IORING_OP_MADVISE);
[4b84e35]	584
	585	if( /func == (fptr_t)openat \|\| /
	586	func == (fptr_t)cfa_openat )
[5751a56]	587	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_OPENAT ,
	588	return IS_DEFINED(CFA_HAVE_IORING_OP_OPENAT);
[4b84e35]	589
	590	if( /func == (fptr_t)close \|\| /
	591	func == (fptr_t)cfa_close )
[5751a56]	592	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_CLOSE ,
	593	return IS_DEFINED(CFA_HAVE_IORING_OP_CLOSE);
[4b84e35]	594
	595	if( /func == (fptr_t)read \|\| /
	596	func == (fptr_t)cfa_read )
[5751a56]	597	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_READ ,
	598	return IS_DEFINED(CFA_HAVE_IORING_OP_READ);
[4b84e35]	599
	600	if( /func == (fptr_t)write \|\| /
	601	func == (fptr_t)cfa_write )
[5751a56]	602	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_WRITE ,
	603	return IS_DEFINED(CFA_HAVE_IORING_OP_WRITE);
[0a92c78]	604
	605	if( /func == (fptr_t)splice \|\| /
[f00b26d4]	606	func == (fptr_t)cfa_splice )
[5751a56]	607	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_SPLICE ,
	608	return IS_DEFINED(CFA_HAVE_IORING_OP_SPLICE);
[0a92c78]	609
	610	if( /func == (fptr_t)tee \|\| /
	611	func == (fptr_t)cfa_tee )
[5751a56]	612	#define _CFA_IO_FEATURE_CFA_HAVE_IORING_OP_TEE ,
	613	return IS_DEFINED(CFA_HAVE_IORING_OP_TEE);
[4b84e35]	614	#endif
	615
	616	return false;
[85eafc5]	617	}

Note: See TracBrowser for help on using the repository browser.

Download in other formats:

Original Format