28278922221

Committed 27 Jun 2026 04:43AM UTC coverage: 52.227% (+0.1%) from 52.111%

Build # 28278922221

Build Type

Pull #79

github

Committed by

web-flow

Commit Message

Merge 478a5fe2e into 53ad1e86c

Pull Request Pull Request #79: Add Valgrind memory checking (C++, Python, MPI) and fix the bugs it found

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37166 of 92481 branches covered (40.19%)

Branch coverage included in aggregate %.

129 of 144 new or added lines in 11 files covered. (89.58%)

39 existing lines in 9 files now uncovered.

33496 of 42816 relevant lines covered (78.23%)

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Source File
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60.97

/src/dftracer/utils/core/io/kqueue_thread_pool_backend.cpp

#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || \
    defined(__NetBSD__) || defined(__DragonFly__)

#include <dftracer/utils/core/common/logging.h>
#include <dftracer/utils/core/io/kqueue_thread_pool_backend.h>
#include <dftracer/utils/core/io/thread_pool_backend.h>  // IoRequest, IoOp
#include <dftracer/utils/core/pipeline/executor.h>
#include <sys/event.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>

#include <cerrno>
#include <cstring>

namespace dftracer::utils::io {

KqueueThreadPoolBackend::KqueueThreadPoolBackend(Executor& executor,
                                                 std::size_t pool_size,
                                                 unsigned batch_threshold)
    : executor_(executor), pool_(pool_size, batch_threshold) {}

KqueueThreadPoolBackend::~KqueueThreadPoolBackend() {
    // Ensure cleanup even if stop() was not called.
    if (kqueue_fd_ >= 0) {
        ::close(kqueue_fd_);
        kqueue_fd_ = -1;
    }
}

void KqueueThreadPoolBackend::start() {
    pool_.start();

    kqueue_fd_ = ::kqueue();
    if (kqueue_fd_ < 0) {
        DFTRACER_UTILS_LOG_ERROR("kqueue() failed: %s", std::strerror(errno));
        return;
    }

    // Register a user event (EVFILT_USER) for shutdown signaling.
    struct kevent ev{};
    EV_SET(&ev, SHUTDOWN_IDENT, EVFILT_USER, EV_ADD | EV_CLEAR, 0, 0, nullptr);
    if (::kevent(kqueue_fd_, &ev, 1, nullptr, 0, nullptr) < 0) {
        DFTRACER_UTILS_LOG_ERROR("kevent(register EVFILT_USER) failed: %s",
                                 std::strerror(errno));
    }

    DFTRACER_UTILS_LOG_DEBUG("kqueue+threadpool backend started (kqueue_fd=%d)",
                             kqueue_fd_);

    completion_thread_.start([this] { kqueue_loop(); });
}

void KqueueThreadPoolBackend::stop() {
    // Signal the completion thread to exit.
    completion_thread_.signal_stop();

    // Wake kevent() by triggering the user event.
    if (kqueue_fd_ >= 0) {
        struct kevent ev{};
        EV_SET(&ev, SHUTDOWN_IDENT, EVFILT_USER, 0, NOTE_TRIGGER, 0, nullptr);
        ::kevent(kqueue_fd_, &ev, 1, nullptr, 0, nullptr);
    }

    completion_thread_.join();
    pool_.stop();

    if (kqueue_fd_ >= 0) {
        ::close(kqueue_fd_);
        kqueue_fd_ = -1;
    }
}

void KqueueThreadPoolBackend::kqueue_loop() {
    constexpr int MAX_EVENTS = 64;
    struct kevent events[MAX_EVENTS];

    // 100ms timeout for periodic running() check.
    struct timespec timeout{};
    timeout.tv_sec = 0;
    timeout.tv_nsec = 100 * 1000 * 1000;  // 100ms

    while (completion_thread_.running()) {
        int n = ::kevent(kqueue_fd_, nullptr, 0, events, MAX_EVENTS, &timeout);
        if (n < 0) {
            if (errno == EINTR) continue;
            break;
        }

        for (int i = 0; i < n; ++i) {
            if (events[i].filter == EVFILT_USER &&
                events[i].ident == SHUTDOWN_IDENT) {
                // Shutdown signal -- process any other events first.
                continue;
            }

            // Future: dispatch socket I/O events here.
            // For now, only the user event is registered.
        }
    }
}

// -- File I/O: identical to ThreadPoolBackend / EpollThreadPoolBackend --

static IoAwaitable make_kqueue_request(IoOp op, int fd, void* buf,
                                       std::size_t len, off_t offset,
                                       const char* path, int flags, mode_t mode,
                                       Executor* executor, IoThreadPool* pool) {
    auto* req = new IoRequest{};
    req->submit = &KqueueThreadPoolBackend::submit_to_pool;
    req->op = op;
    req->fd = fd;
    req->buf = buf;
    req->len = len;
    req->offset = offset;
    req->path = path;
    req->flags = flags;
    req->mode = mode;
    req->executor = executor;
    req->pool = pool;

    IoAwaitable awaitable;
    req->awaitable = nullptr;
    awaitable.submit_ctx_ = req;
    return awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_read(int fd, void* buf,
                                                 std::size_t len) {
    return make_kqueue_request(IoOp::READ, fd, buf, len, 0, nullptr, 0, 0,
                               &executor_, &pool_);
}

IoAwaitable KqueueThreadPoolBackend::submit_write(int fd, const void* buf,
                                                  std::size_t len) {
    return make_kqueue_request(IoOp::WRITE, fd, const_cast<void*>(buf), len, 0,
                               nullptr, 0, 0, &executor_, &pool_);
}

IoAwaitable KqueueThreadPoolBackend::submit_pread(int fd, void* buf,
                                                  std::size_t len,
                                                  off_t offset) {
    return make_kqueue_request(IoOp::PREAD, fd, buf, len, offset, nullptr, 0, 0,
                               &executor_, &pool_);
}

void KqueueThreadPoolBackend::submit_pread_callback(int fd, void* buf,
                                                    std::size_t len,
                                                    off_t offset,
                                                    IoCompletionFn completion,
                                                    void* context) {
    auto* req = new IoRequest{};
    req->op = IoOp::PREAD;
    req->fd = fd;
    req->buf = buf;
    req->len = len;
    req->offset = offset;
    req->completion = completion;
    req->completion_ctx = context;
    req->pool = &pool_;
    pool_.submit([req] { execute_request(req); });
}

IoAwaitable KqueueThreadPoolBackend::submit_pwrite(int fd, const void* buf,
                                                   std::size_t len,
                                                   off_t offset) {
    return make_kqueue_request(IoOp::PWRITE, fd, const_cast<void*>(buf), len,
                               offset, nullptr, 0, 0, &executor_, &pool_);
}

IoAwaitable KqueueThreadPoolBackend::submit_open(const char* path, int flags,
                                                 mode_t mode) {
    return make_kqueue_request(IoOp::OPEN, -1, nullptr, 0, 0, path, flags, mode,
                               &executor_, &pool_);
}

IoAwaitable KqueueThreadPoolBackend::submit_close(int fd) {
    return make_kqueue_request(IoOp::CLOSE, fd, nullptr, 0, 0, nullptr, 0, 0,
                               &executor_, &pool_);
}

IoAwaitable KqueueThreadPoolBackend::submit_fsync(int fd) {
    return make_kqueue_request(IoOp::FSYNC, fd, nullptr, 0, 0, nullptr, 0, 0,
                               &executor_, &pool_);
}

IoAwaitable KqueueThreadPoolBackend::submit_ftruncate(int fd, off_t length) {
    return make_kqueue_request(IoOp::FTRUNCATE, fd, nullptr, 0, length, nullptr,
                               0, 0, &executor_, &pool_);
}

IoAwaitable KqueueThreadPoolBackend::submit_fstat(int fd, struct stat* buf) {
    auto req_awaitable = make_kqueue_request(IoOp::FSTAT, fd, nullptr, 0, 0,
                                             nullptr, 0, 0, &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->stat_buf = buf;
    return req_awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_accept(int listen_fd,
                                                   struct sockaddr* addr,
                                                   socklen_t* addrlen) {
    auto req_awaitable =
        make_kqueue_request(IoOp::ACCEPT, listen_fd, nullptr, 0, 0, nullptr, 0,
                            0, &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->addr = addr;
    req->addrlen = addrlen;
    return req_awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_recv(int fd, void* buf,
                                                 std::size_t len, int flags) {
    auto req_awaitable = make_kqueue_request(IoOp::RECV, fd, buf, len, 0,
                                             nullptr, 0, 0, &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->msg_flags = flags;
    return req_awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_send(int fd, const void* buf,
                                                 std::size_t len, int flags) {
    auto req_awaitable =
        make_kqueue_request(IoOp::SEND, fd, const_cast<void*>(buf), len, 0,
                            nullptr, 0, 0, &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->msg_flags = flags;
    return req_awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_readv(int fd,
                                                  const struct iovec* iov,
                                                  int iovcnt) {
    auto req_awaitable = make_kqueue_request(IoOp::READV, fd, nullptr, 0, 0,
                                             nullptr, 0, 0, &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->iov = iov;
    req->iovcnt = iovcnt;
    return req_awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_writev(int fd,
                                                   const struct iovec* iov,
                                                   int iovcnt) {
    auto req_awaitable = make_kqueue_request(IoOp::WRITEV, fd, nullptr, 0, 0,
                                             nullptr, 0, 0, &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->iov = iov;
    req->iovcnt = iovcnt;
    return req_awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_preadv(int fd,
                                                   const struct iovec* iov,
                                                   int iovcnt, off_t offset) {
    auto req_awaitable =
        make_kqueue_request(IoOp::PREADV, fd, nullptr, 0, offset, nullptr, 0, 0,
                            &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->iov = iov;
    req->iovcnt = iovcnt;
    return req_awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_pwritev(int fd,
                                                    const struct iovec* iov,
                                                    int iovcnt, off_t offset) {
    auto req_awaitable =
        make_kqueue_request(IoOp::PWRITEV, fd, nullptr, 0, offset, nullptr, 0,
                            0, &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->iov = iov;
    req->iovcnt = iovcnt;
    return req_awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_lseek(int fd, off_t offset,
                                                  int whence) {
    auto req_awaitable = make_kqueue_request(
        IoOp::LSEEK, fd, nullptr, 0, offset, nullptr, 0, 0, &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->whence = whence;
    return req_awaitable;
}

IoAwaitable KqueueThreadPoolBackend::submit_sendfile(int out_fd, int in_fd,
                                                     off_t offset,
                                                     std::size_t count) {
    auto req_awaitable =
        make_kqueue_request(IoOp::SENDFILE, in_fd, nullptr, count, offset,
                            nullptr, 0, 0, &executor_, &pool_);
    auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);
    req->dest_fd = out_fd;
    return req_awaitable;
}

void KqueueThreadPoolBackend::submit_to_pool(SubmitContext* ctx,
                                             IoAwaitable* awaitable) {
    auto* req = static_cast<IoRequest*>(ctx);
    req->awaitable = awaitable;
    req->pool->submit([req] { execute_request(req); });
}

void KqueueThreadPoolBackend::execute_request(IoRequest* req) {
    ssize_t result = 0;
    switch (req->op) {
        case IoOp::READ:
            result = ::read(req->fd, req->buf, req->len);
            break;
        case IoOp::WRITE:
            result = ::write(req->fd, req->buf, req->len);
            break;
        case IoOp::PREAD:
            result = ::pread(req->fd, req->buf, req->len, req->offset);
            break;
        case IoOp::PWRITE:
            result = ::pwrite(req->fd, req->buf, req->len, req->offset);
            break;
        case IoOp::OPEN:
            result = ::open(req->path, req->flags, req->mode);
            break;
        case IoOp::CLOSE:
            result = ::close(req->fd);
            break;
        case IoOp::FSYNC:
            result = ::fsync(req->fd);
            break;
        case IoOp::FTRUNCATE:
            result = ::ftruncate(req->fd, req->offset);
            break;
        case IoOp::FSTAT:
            result = ::fstat(req->fd, req->stat_buf);
            break;
        case IoOp::ACCEPT:
            result = ::accept(req->fd, req->addr, req->addrlen);
            if (result >= 0) {
                int fd = static_cast<int>(result);
                int fl = ::fcntl(fd, F_GETFL, 0);
                ::fcntl(fd, F_SETFL, fl | O_NONBLOCK);
                ::fcntl(fd, F_SETFD, FD_CLOEXEC);
            }
            break;
        case IoOp::RECV:
            result = ::recv(req->fd, req->buf, req->len, req->msg_flags);
            break;
        case IoOp::SEND:
            result = ::send(req->fd, req->buf, req->len, req->msg_flags);
            break;
        case IoOp::READV:
            result = ::readv(req->fd, req->iov, req->iovcnt);
            break;
        case IoOp::WRITEV:
            result = ::writev(req->fd, req->iov, req->iovcnt);
            break;
        case IoOp::PREADV:
            result = ::preadv(req->fd, req->iov, req->iovcnt, req->offset);
            break;
        case IoOp::PWRITEV:
            result = ::pwritev(req->fd, req->iov, req->iovcnt, req->offset);
            break;
        case IoOp::LSEEK:
            result = ::lseek(req->fd, req->offset, req->whence);
            break;
        case IoOp::SENDFILE: {
#ifdef __APPLE__
            off_t len = static_cast<off_t>(req->len);
            int ret = ::sendfile(req->fd, req->dest_fd, req->offset, &len,
                                 nullptr, 0);
            result = (ret == 0 || errno == EAGAIN) ? len : -1;
#else
            char tmp[8192];
            result = 0;
            off_t off = req->offset;
            std::size_t remaining = req->len;
            while (remaining > 0) {
                std::size_t chunk =
                    remaining < sizeof(tmp) ? remaining : sizeof(tmp);
                ssize_t r = ::pread(req->fd, tmp, chunk, off);
                if (r <= 0) {
                    if (result == 0) result = r;
                    break;
                }
                ssize_t w =
                    ::write(req->dest_fd, tmp, static_cast<std::size_t>(r));
                if (w < 0) {
                    if (result == 0) result = w;
                    break;
                }
                result += w;
                off += w;
                remaining -= static_cast<std::size_t>(w);
                if (w < r) break;
            }
#endif
            break;
        }
    }
    if (result < 0) result = -errno;

    if (req->awaitable != nullptr) {
        req->awaitable->result_ = result;
        req->executor->enqueue(req->awaitable->handle_);
    } else if (req->completion != nullptr) {
        req->completion(req->completion_ctx, result);
    }
    delete req;
}

std::size_t KqueueThreadPoolBackend::poll(int /*timeout_ms*/) {
    // Completions fire via thread pool callbacks -- nothing to poll.
    return 0;
}

int KqueueThreadPoolBackend::flush() { return static_cast<int>(pool_.flush()); }

}  // namespace dftracer::utils::io

#endif  // kqueue platforms

1	#if defined(__APPLE__) \|\| defined(__FreeBSD__) \|\| defined(__OpenBSD__) \|\| \
2	defined(__NetBSD__) \|\| defined(__DragonFly__)
3
4	#include <dftracer/utils/core/common/logging.h>
5	#include <dftracer/utils/core/io/kqueue_thread_pool_backend.h>
6	#include <dftracer/utils/core/io/thread_pool_backend.h> // IoRequest, IoOp
7	#include <dftracer/utils/core/pipeline/executor.h>
8	#include <sys/event.h>
9	#include <sys/socket.h>
10	#include <sys/stat.h>
11	#include <sys/time.h>
12	#include <sys/types.h>
13	#include <sys/uio.h>
14	#include <unistd.h>
15
16	#include <cerrno>
17	#include <cstring>
18
19	namespace dftracer::utils::io {
20
21	KqueueThreadPoolBackend::KqueueThreadPoolBackend(Executor& executor,	1,054✔
22	std::size_t pool_size,
23	unsigned batch_threshold)
24	: executor_(executor), pool_(pool_size, batch_threshold) {}	1,054!
25
26	KqueueThreadPoolBackend::~KqueueThreadPoolBackend() {	1,581✔
27	// Ensure cleanup even if stop() was not called.
28	if (kqueue_fd_ >= 0) {	527!
29	::close(kqueue_fd_);	×
30	kqueue_fd_ = -1;	×
31	}	×
32	}	1,581✔
33
34	void KqueueThreadPoolBackend::start() {	527✔
35	pool_.start();	527✔
36
37	kqueue_fd_ = ::kqueue();	527✔
38	if (kqueue_fd_ < 0) {	527!
39	DFTRACER_UTILS_LOG_ERROR("kqueue() failed: %s", std::strerror(errno));	×
40	return;	×
41	}
42
43	// Register a user event (EVFILT_USER) for shutdown signaling.
44	struct kevent ev{};	527✔
45	EV_SET(&ev, SHUTDOWN_IDENT, EVFILT_USER, EV_ADD \| EV_CLEAR, 0, 0, nullptr);	527✔
46	if (::kevent(kqueue_fd_, &ev, 1, nullptr, 0, nullptr) < 0) {	527!
47	DFTRACER_UTILS_LOG_ERROR("kevent(register EVFILT_USER) failed: %s",	×
48	std::strerror(errno));
49	}	×
50
51	DFTRACER_UTILS_LOG_DEBUG("kqueue+threadpool backend started (kqueue_fd=%d)",
52	kqueue_fd_);
53
54	completion_thread_.start([this] { kqueue_loop(); });	1,054!
55	}	527✔
56
57	void KqueueThreadPoolBackend::stop() {	527✔
58	// Signal the completion thread to exit.
59	completion_thread_.signal_stop();	527✔
60
61	// Wake kevent() by triggering the user event.
62	if (kqueue_fd_ >= 0) {	527!
63	struct kevent ev{};	527✔
64	EV_SET(&ev, SHUTDOWN_IDENT, EVFILT_USER, 0, NOTE_TRIGGER, 0, nullptr);	527✔
65	::kevent(kqueue_fd_, &ev, 1, nullptr, 0, nullptr);	527✔
66	}	527✔
67
68	completion_thread_.join();	527✔
69	pool_.stop();	527✔
70
71	if (kqueue_fd_ >= 0) {	527!
72	::close(kqueue_fd_);	527✔
73	kqueue_fd_ = -1;	527✔
74	}	527✔
75	}	527✔
76
77	void KqueueThreadPoolBackend::kqueue_loop() {	527✔
78	constexpr int MAX_EVENTS = 64;	527✔
79	struct kevent events[MAX_EVENTS];
80
81	// 100ms timeout for periodic running() check.
82	struct timespec timeout{};	527✔
83	timeout.tv_sec = 0;	527✔
84	timeout.tv_nsec = 100 * 1000 * 1000; // 100ms	527✔
85
86	while (completion_thread_.running()) {	1,639✔
87	int n = ::kevent(kqueue_fd_, nullptr, 0, events, MAX_EVENTS, &timeout);	1,112✔
88	if (n < 0) {	1,112!
89	if (errno == EINTR) continue;	×
90	break;	×
91	}
92
93	for (int i = 0; i < n; ++i) {	1,639✔
94	if (events[i].filter == EVFILT_USER &&	527!
95	events[i].ident == SHUTDOWN_IDENT) {	527✔
96	// Shutdown signal -- process any other events first.
97	continue;	527✔
98	}
99
100	// Future: dispatch socket I/O events here.
101	// For now, only the user event is registered.
102	}	×
103	}
104	}	527✔
105
106	// -- File I/O: identical to ThreadPoolBackend / EpollThreadPoolBackend --
107
108	static IoAwaitable make_kqueue_request(IoOp op, int fd, void* buf,	4,360✔
109	std::size_t len, off_t offset,
110	const char* path, int flags, mode_t mode,
111	Executor* executor, IoThreadPool* pool) {
112	auto* req = new IoRequest{};	4,360✔
113	req->submit = &KqueueThreadPoolBackend::submit_to_pool;	4,360✔
114	req->op = op;	4,360✔
115	req->fd = fd;	4,360✔
116	req->buf = buf;	4,360✔
117	req->len = len;	4,360✔
118	req->offset = offset;	4,360✔
119	req->path = path;	4,360✔
120	req->flags = flags;	4,360✔
121	req->mode = mode;	4,360✔
122	req->executor = executor;	4,360✔
123	req->pool = pool;	4,360✔
124
125	IoAwaitable awaitable;	4,360✔
126	req->awaitable = nullptr;	4,360✔
127	awaitable.submit_ctx_ = req;	4,360✔
128	return awaitable;	4,360✔
129	}
130
131	IoAwaitable KqueueThreadPoolBackend::submit_read(int fd, void* buf,	626✔
132	std::size_t len) {
133	return make_kqueue_request(IoOp::READ, fd, buf, len, 0, nullptr, 0, 0,	1,252✔
134	&executor_, &pool_);	626✔
135	}
136
137	IoAwaitable KqueueThreadPoolBackend::submit_write(int fd, const void* buf,	648✔
138	std::size_t len) {
139	return make_kqueue_request(IoOp::WRITE, fd, const_cast<void*>(buf), len, 0,	1,296✔
140	nullptr, 0, 0, &executor_, &pool_);	648✔
141	}
142
143	IoAwaitable KqueueThreadPoolBackend::submit_pread(int fd, void* buf,	1,158✔
144	std::size_t len,
145	off_t offset) {
146	return make_kqueue_request(IoOp::PREAD, fd, buf, len, offset, nullptr, 0, 0,	2,316✔
147	&executor_, &pool_);	1,158✔
148	}
149
150	void KqueueThreadPoolBackend::submit_pread_callback(int fd, void* buf,	×
151	std::size_t len,
152	off_t offset,
153	IoCompletionFn completion,
154	void* context) {
155	auto* req = new IoRequest{};	×
UNCOV 156	req->op = IoOp::PREAD;	×
UNCOV 157	req->fd = fd;	×
UNCOV 158	req->buf = buf;	×
UNCOV 159	req->len = len;	×
UNCOV 160	req->offset = offset;	×
UNCOV 161	req->completion = completion;	×
UNCOV 162	req->completion_ctx = context;	×
UNCOV 163	req->pool = &pool_;	×
164	pool_.submit([req] { execute_request(req); });	×
UNCOV 165	}	×
166
167	IoAwaitable KqueueThreadPoolBackend::submit_pwrite(int fd, const void* buf,	176✔
168	std::size_t len,
169	off_t offset) {
170	return make_kqueue_request(IoOp::PWRITE, fd, const_cast<void*>(buf), len,	352✔
171	offset, nullptr, 0, 0, &executor_, &pool_);	176✔
172	}
173
174	IoAwaitable KqueueThreadPoolBackend::submit_open(const char* path, int flags,	906✔
175	mode_t mode) {
176	return make_kqueue_request(IoOp::OPEN, -1, nullptr, 0, 0, path, flags, mode,	1,812✔
177	&executor_, &pool_);	906✔
178	}
179
180	IoAwaitable KqueueThreadPoolBackend::submit_close(int fd) {	715✔
181	return make_kqueue_request(IoOp::CLOSE, fd, nullptr, 0, 0, nullptr, 0, 0,	1,430✔
182	&executor_, &pool_);	715✔
183	}
184
185	IoAwaitable KqueueThreadPoolBackend::submit_fsync(int fd) {	56✔
186	return make_kqueue_request(IoOp::FSYNC, fd, nullptr, 0, 0, nullptr, 0, 0,	112✔
187	&executor_, &pool_);	56✔
188	}
189
190	IoAwaitable KqueueThreadPoolBackend::submit_ftruncate(int fd, off_t length) {	×
191	return make_kqueue_request(IoOp::FTRUNCATE, fd, nullptr, 0, length, nullptr,	×
192	0, 0, &executor_, &pool_);	×
193	}
194
195	IoAwaitable KqueueThreadPoolBackend::submit_fstat(int fd, struct stat* buf) {	×
196	auto req_awaitable = make_kqueue_request(IoOp::FSTAT, fd, nullptr, 0, 0,	×
197	nullptr, 0, 0, &executor_, &pool_);	×
198	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	×
199	req->stat_buf = buf;	×
200	return req_awaitable;	×
201	}
202
203	IoAwaitable KqueueThreadPoolBackend::submit_accept(int listen_fd,	×
204	struct sockaddr* addr,
205	socklen_t* addrlen) {
206	auto req_awaitable =
207	make_kqueue_request(IoOp::ACCEPT, listen_fd, nullptr, 0, 0, nullptr, 0,	×
208	0, &executor_, &pool_);	×
209	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	×
210	req->addr = addr;	×
211	req->addrlen = addrlen;	×
212	return req_awaitable;	×
213	}
214
215	IoAwaitable KqueueThreadPoolBackend::submit_recv(int fd, void* buf,	×
216	std::size_t len, int flags) {
217	auto req_awaitable = make_kqueue_request(IoOp::RECV, fd, buf, len, 0,	×
218	nullptr, 0, 0, &executor_, &pool_);	×
219	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	×
220	req->msg_flags = flags;	×
221	return req_awaitable;	×
222	}
223
224	IoAwaitable KqueueThreadPoolBackend::submit_send(int fd, const void* buf,	×
225	std::size_t len, int flags) {
226	auto req_awaitable =
227	make_kqueue_request(IoOp::SEND, fd, const_cast<void*>(buf), len, 0,	×
228	nullptr, 0, 0, &executor_, &pool_);	×
229	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	×
230	req->msg_flags = flags;	×
231	return req_awaitable;	×
232	}
233
234	IoAwaitable KqueueThreadPoolBackend::submit_readv(int fd,	×
235	const struct iovec* iov,
236	int iovcnt) {
237	auto req_awaitable = make_kqueue_request(IoOp::READV, fd, nullptr, 0, 0,	×
238	nullptr, 0, 0, &executor_, &pool_);	×
239	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	×
240	req->iov = iov;	×
241	req->iovcnt = iovcnt;	×
242	return req_awaitable;	×
243	}
244
245	IoAwaitable KqueueThreadPoolBackend::submit_writev(int fd,	1✔
246	const struct iovec* iov,
247	int iovcnt) {
248	auto req_awaitable = make_kqueue_request(IoOp::WRITEV, fd, nullptr, 0, 0,	2✔
249	nullptr, 0, 0, &executor_, &pool_);	1✔
250	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	1✔
251	req->iov = iov;	1✔
252	req->iovcnt = iovcnt;	1✔
253	return req_awaitable;	1✔
254	}
255
256	IoAwaitable KqueueThreadPoolBackend::submit_preadv(int fd,	1✔
257	const struct iovec* iov,
258	int iovcnt, off_t offset) {
259	auto req_awaitable =
260	make_kqueue_request(IoOp::PREADV, fd, nullptr, 0, offset, nullptr, 0, 0,	2✔
261	&executor_, &pool_);	1✔
262	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	1✔
263	req->iov = iov;	1✔
264	req->iovcnt = iovcnt;	1✔
265	return req_awaitable;	1✔
266	}
267
268	IoAwaitable KqueueThreadPoolBackend::submit_pwritev(int fd,	71✔
269	const struct iovec* iov,
270	int iovcnt, off_t offset) {
271	auto req_awaitable =
272	make_kqueue_request(IoOp::PWRITEV, fd, nullptr, 0, offset, nullptr, 0,	142✔
273	0, &executor_, &pool_);	71✔
274	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	71✔
275	req->iov = iov;	71✔
276	req->iovcnt = iovcnt;	71✔
277	return req_awaitable;	71✔
278	}
279
280	IoAwaitable KqueueThreadPoolBackend::submit_lseek(int fd, off_t offset,	1✔
281	int whence) {
282	auto req_awaitable = make_kqueue_request(	1✔
283	IoOp::LSEEK, fd, nullptr, 0, offset, nullptr, 0, 0, &executor_, &pool_);	1✔
284	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	1✔
285	req->whence = whence;	1✔
286	return req_awaitable;	1✔
287	}
288
289	IoAwaitable KqueueThreadPoolBackend::submit_sendfile(int out_fd, int in_fd,	1✔
290	off_t offset,
291	std::size_t count) {
292	auto req_awaitable =
293	make_kqueue_request(IoOp::SENDFILE, in_fd, nullptr, count, offset,	2✔
294	nullptr, 0, 0, &executor_, &pool_);	1✔
295	auto* req = static_cast<IoRequest*>(req_awaitable.submit_ctx_);	1✔
296	req->dest_fd = out_fd;	1✔
297	return req_awaitable;	1✔
298	}
299
300	void KqueueThreadPoolBackend::submit_to_pool(SubmitContext* ctx,	4,360✔
301	IoAwaitable* awaitable) {
302	auto* req = static_cast<IoRequest*>(ctx);	4,360✔
303	req->awaitable = awaitable;	4,360✔
304	req->pool->submit([req] { execute_request(req); });	8,720!
305	}	4,360✔
306
307	void KqueueThreadPoolBackend::execute_request(IoRequest* req) {	4,360✔
308	ssize_t result = 0;	4,360✔
309	switch (req->op) {	4,360!
310	case IoOp::READ:
311	result = ::read(req->fd, req->buf, req->len);	626✔
312	break;	626✔
313	case IoOp::WRITE:
314	result = ::write(req->fd, req->buf, req->len);	648✔
315	break;	648✔
316	case IoOp::PREAD:
317	result = ::pread(req->fd, req->buf, req->len, req->offset);	1,158✔
318	break;	1,158✔
319	case IoOp::PWRITE:
320	result = ::pwrite(req->fd, req->buf, req->len, req->offset);	176✔
321	break;	176✔
322	case IoOp::OPEN:
323	result = ::open(req->path, req->flags, req->mode);	906✔
324	break;	906✔
325	case IoOp::CLOSE:
326	result = ::close(req->fd);	715✔
327	break;	715✔
328	case IoOp::FSYNC:
329	result = ::fsync(req->fd);	56✔
330	break;	56✔
331	case IoOp::FTRUNCATE:
332	result = ::ftruncate(req->fd, req->offset);	×
333	break;	×
334	case IoOp::FSTAT:
335	result = ::fstat(req->fd, req->stat_buf);	×
336	break;	×
337	case IoOp::ACCEPT:
338	result = ::accept(req->fd, req->addr, req->addrlen);	×
339	if (result >= 0) {	×
340	int fd = static_cast<int>(result);	×
341	int fl = ::fcntl(fd, F_GETFL, 0);	×
342	::fcntl(fd, F_SETFL, fl \| O_NONBLOCK);	×
343	::fcntl(fd, F_SETFD, FD_CLOEXEC);	×
344	}	×
345	break;	×
346	case IoOp::RECV:
347	result = ::recv(req->fd, req->buf, req->len, req->msg_flags);	×
348	break;	×
349	case IoOp::SEND:
350	result = ::send(req->fd, req->buf, req->len, req->msg_flags);	×
351	break;	×
352	case IoOp::READV:
353	result = ::readv(req->fd, req->iov, req->iovcnt);	×
354	break;	×
355	case IoOp::WRITEV:
356	result = ::writev(req->fd, req->iov, req->iovcnt);	1✔
357	break;	1✔
358	case IoOp::PREADV:
359	result = ::preadv(req->fd, req->iov, req->iovcnt, req->offset);	1✔
360	break;	1✔
361	case IoOp::PWRITEV:
362	result = ::pwritev(req->fd, req->iov, req->iovcnt, req->offset);	71✔
363	break;	71✔
364	case IoOp::LSEEK:
365	result = ::lseek(req->fd, req->offset, req->whence);	1✔
366	break;	1✔
367	case IoOp::SENDFILE: {
368	#ifdef __APPLE__
369	off_t len = static_cast<off_t>(req->len);	1✔
370	int ret = ::sendfile(req->fd, req->dest_fd, req->offset, &len,	1✔
371	nullptr, 0);
372	result = (ret == 0 \|\| errno == EAGAIN) ? len : -1;	1!
373	#else
374	char tmp[8192];
375	result = 0;
376	off_t off = req->offset;
377	std::size_t remaining = req->len;
378	while (remaining > 0) {
379	std::size_t chunk =
380	remaining < sizeof(tmp) ? remaining : sizeof(tmp);
381	ssize_t r = ::pread(req->fd, tmp, chunk, off);
382	if (r <= 0) {
383	if (result == 0) result = r;
384	break;
385	}
386	ssize_t w =
387	::write(req->dest_fd, tmp, static_cast<std::size_t>(r));
388	if (w < 0) {
389	if (result == 0) result = w;
390	break;
391	}
392	result += w;
393	off += w;
394	remaining -= static_cast<std::size_t>(w);
395	if (w < r) break;
396	}
397	#endif
398	break;	1✔
399	}
400	}
401	if (result < 0) result = -errno;	4,360✔
402
403	if (req->awaitable != nullptr) {	4,360!
404	req->awaitable->result_ = result;	4,360✔
405	req->executor->enqueue(req->awaitable->handle_);	4,360✔
406	} else if (req->completion != nullptr) {	4,360!
407	req->completion(req->completion_ctx, result);	×
408	}	×
409	delete req;	4,360!
410	}	4,360✔
411
412	std::size_t KqueueThreadPoolBackend::poll(int /timeout_ms/) {	22,143✔
413	// Completions fire via thread pool callbacks -- nothing to poll.
414	return 0;	22,143✔
415	}
416
417	int KqueueThreadPoolBackend::flush() { return static_cast<int>(pool_.flush()); }	22,118✔
418
419	} // namespace dftracer::utils::io
420
421	#endif // kqueue platforms

llnl / dftracer-utils / 28278922221

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