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Initial data movement out of chttp2_transport

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pull/2149/head
Craig Tiller 10 years ago
parent 42cdf94d11
commit 9b8671c739
2 changed files with 307 additions and 300 deletions
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  1. 306
      src/core/transport/chttp2/internal.h
  2. 301
      src/core/transport/chttp2_transport.c

306
src/core/transport/chttp2/internal.h
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@ -0,0 +1,306 @@
#ifndef GRPC_INTERNAL_CORE_CHTTP2_INTERNAL_H
#define GRPC_INTERNAL_CORE_CHTTP2_INTERNAL_H
#include "src/core/transport/transport_impl.h"
typedef struct transport transport;
typedef struct stream stream;
/* streams are kept in various linked lists depending on what things need to
happen to them... this enum labels each list */
typedef enum {
/* streams that have pending writes */
WRITABLE = 0,
/* streams that have been selected to be written */
WRITING,
/* streams that have just been written, and included a close */
WRITTEN_CLOSED,
/* streams that have been cancelled and have some pending state updates
to perform */
CANCELLED,
/* streams that want to send window updates */
WINDOW_UPDATE,
/* streams that are waiting to start because there are too many concurrent
streams on the connection */
WAITING_FOR_CONCURRENCY,
/* streams that have finished reading: we wait until unlock to coalesce
all changes into one callback */
FINISHED_READ_OP,
MAYBE_FINISH_READ_AFTER_PARSE,
PARSER_CHECK_WINDOW_UPDATES_AFTER_PARSE,
OTHER_CHECK_WINDOW_UPDATES_AFTER_PARSE,
NEW_OUTGOING_WINDOW,
STREAM_LIST_COUNT /* must be last */
} stream_list_id;
/* deframer state for the overall http2 stream of bytes */
typedef enum {
/* prefix: one entry per http2 connection prefix byte */
DTS_CLIENT_PREFIX_0 = 0,
DTS_CLIENT_PREFIX_1,
DTS_CLIENT_PREFIX_2,
DTS_CLIENT_PREFIX_3,
DTS_CLIENT_PREFIX_4,
DTS_CLIENT_PREFIX_5,
DTS_CLIENT_PREFIX_6,
DTS_CLIENT_PREFIX_7,
DTS_CLIENT_PREFIX_8,
DTS_CLIENT_PREFIX_9,
DTS_CLIENT_PREFIX_10,
DTS_CLIENT_PREFIX_11,
DTS_CLIENT_PREFIX_12,
DTS_CLIENT_PREFIX_13,
DTS_CLIENT_PREFIX_14,
DTS_CLIENT_PREFIX_15,
DTS_CLIENT_PREFIX_16,
DTS_CLIENT_PREFIX_17,
DTS_CLIENT_PREFIX_18,
DTS_CLIENT_PREFIX_19,
DTS_CLIENT_PREFIX_20,
DTS_CLIENT_PREFIX_21,
DTS_CLIENT_PREFIX_22,
DTS_CLIENT_PREFIX_23,
/* frame header byte 0... */
/* must follow from the prefix states */
DTS_FH_0,
DTS_FH_1,
DTS_FH_2,
DTS_FH_3,
DTS_FH_4,
DTS_FH_5,
DTS_FH_6,
DTS_FH_7,
/* ... frame header byte 8 */
DTS_FH_8,
/* inside a http2 frame */
DTS_FRAME
} deframe_transport_state;
typedef enum {
WRITE_STATE_OPEN,
WRITE_STATE_QUEUED_CLOSE,
WRITE_STATE_SENT_CLOSE
} write_state;
typedef enum {
DONT_SEND_CLOSED = 0,
SEND_CLOSED,
SEND_CLOSED_WITH_RST_STREAM
} send_closed;
typedef struct {
stream *head;
stream *tail;
} stream_list;
typedef struct {
stream *next;
stream *prev;
} stream_link;
typedef enum {
ERROR_STATE_NONE,
ERROR_STATE_SEEN,
ERROR_STATE_NOTIFIED
} error_state;
/* We keep several sets of connection wide parameters */
typedef enum {
/* The settings our peer has asked for (and we have acked) */
PEER_SETTINGS = 0,
/* The settings we'd like to have */
LOCAL_SETTINGS,
/* The settings we've published to our peer */
SENT_SETTINGS,
/* The settings the peer has acked */
ACKED_SETTINGS,
NUM_SETTING_SETS
} setting_set;
/* Outstanding ping request data */
typedef struct {
gpr_uint8 id[8];
void (*cb)(void *user_data);
void *user_data;
} outstanding_ping;
typedef struct {
grpc_status_code status;
gpr_slice debug;
} pending_goaway;
struct transport {
grpc_transport base; /* must be first */
grpc_endpoint *ep;
grpc_mdctx *metadata_context;
gpr_refcount refs;
gpr_uint8 is_client;
gpr_mu mu;
gpr_cv cv;
/* basic state management - what are we doing at the moment? */
gpr_uint8 reading;
/** are we calling back any grpc_transport_op completion events */
gpr_uint8 calling_back_ops;
gpr_uint8 destroying;
gpr_uint8 closed;
error_state error_state;
/* stream indexing */
gpr_uint32 next_stream_id;
gpr_uint32 last_incoming_stream_id;
/* settings */
gpr_uint32 settings[NUM_SETTING_SETS][GRPC_CHTTP2_NUM_SETTINGS];
gpr_uint32 force_send_settings; /* bitmask of setting indexes to send out */
gpr_uint8 sent_local_settings; /* have local settings been sent? */
gpr_uint8 dirtied_local_settings; /* are the local settings dirty? */
/* window management */
gpr_uint32 outgoing_window;
gpr_uint32 outgoing_window_update;
gpr_uint32 incoming_window;
gpr_uint32 connection_window_target;
/* deframing */
deframe_transport_state deframe_state;
gpr_uint8 incoming_frame_type;
gpr_uint8 incoming_frame_flags;
gpr_uint8 header_eof;
gpr_uint32 expect_continuation_stream_id;
gpr_uint32 incoming_frame_size;
gpr_uint32 incoming_stream_id;
/* goaway */
pending_goaway *pending_goaways;
size_t num_pending_goaways;
size_t cap_pending_goaways;
/* state for a stream that's not yet been created */
grpc_stream_op_buffer new_stream_sopb;
/* stream ops that need to be destroyed, but outside of the lock */
grpc_stream_op_buffer nuke_later_sopb;
/* active parser */
void *parser_data;
stream *incoming_stream;
grpc_chttp2_parse_error (*parser)(void *parser_user_data,
grpc_chttp2_parse_state *state,
gpr_slice slice, int is_last);
stream_list lists[STREAM_LIST_COUNT];
grpc_chttp2_stream_map stream_map;
/* pings */
outstanding_ping *pings;
size_t ping_count;
size_t ping_capacity;
gpr_int64 ping_counter;
struct {
/* metadata object cache */
grpc_mdstr *str_grpc_timeout;
} constants;
struct {
/** data to write next write */
gpr_slice_buffer qbuf;
/* queued callbacks */
grpc_iomgr_closure *pending_closures;
} global;
struct {
/** is a thread currently writing */
gpr_uint8 executing;
/** closure to execute this action */
grpc_iomgr_closure action;
/** data to write now */
gpr_slice_buffer outbuf;
/* hpack encoding */
grpc_chttp2_hpack_compressor hpack_compressor;
} writing;
struct {
/** is a thread currently parsing */
gpr_uint8 executing;
/** data to write later - after parsing */
gpr_slice_buffer qbuf;
/** parser for headers */
grpc_chttp2_hpack_parser hpack_parser;
/** simple one shot parsers */
union {
grpc_chttp2_window_update_parser window_update;
grpc_chttp2_settings_parser settings;
grpc_chttp2_ping_parser ping;
grpc_chttp2_rst_stream_parser rst_stream;
} simple;
/** parser for goaway frames */
grpc_chttp2_goaway_parser goaway_parser;
} parsing;
struct {
/** is a thread currently performing channel callbacks */
gpr_uint8 executing;
/** transport channel-level callback */
const grpc_transport_callbacks *cb;
/** user data for cb calls */
void *cb_user_data;
/** closure for notifying transport closure */
grpc_iomgr_closure notify_closed;
} channel_callback;
};
struct stream {
struct {
grpc_iomgr_closure *send_done_closure;
grpc_iomgr_closure *recv_done_closure;
} global;
struct {
/* sops that have passed flow control to be written */
grpc_stream_op_buffer sopb;
/* how strongly should we indicate closure with the next write */
send_closed send_closed;
} writing;
struct {
int unused;
} parsing;
gpr_uint32 id;
gpr_uint32 incoming_window;
gpr_int64 outgoing_window;
gpr_uint32 outgoing_window_update;
/* when the application requests writes be closed, the write_closed is
'queued'; when the close is flow controlled into the send path, we are
'sending' it; when the write has been performed it is 'sent' */
write_state write_state;
gpr_uint8 read_closed;
gpr_uint8 cancelled;
stream_link links[STREAM_LIST_COUNT];
gpr_uint8 included[STREAM_LIST_COUNT];
/* incoming metadata */
grpc_linked_mdelem *incoming_metadata;
size_t incoming_metadata_count;
size_t incoming_metadata_capacity;
grpc_linked_mdelem *old_incoming_metadata;
gpr_timespec incoming_deadline;
/* sops from application */
grpc_stream_op_buffer *outgoing_sopb;
grpc_stream_op_buffer *incoming_sopb;
grpc_stream_state *publish_state;
grpc_stream_state published_state;
grpc_chttp2_data_parser parser;
grpc_stream_state callback_state;
grpc_stream_op_buffer callback_sopb;
};
#endif

301
src/core/transport/chttp2_transport.c
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@ -51,6 +51,7 @@
#include "src/core/transport/chttp2/stream_encoder.h"
#include "src/core/transport/chttp2/stream_map.h"
#include "src/core/transport/chttp2/timeout_encoding.h"
#include "src/core/transport/chttp2/internal.h"
#include "src/core/transport/transport_impl.h"
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
@ -69,9 +70,6 @@
int grpc_http_trace = 0;
int grpc_flowctl_trace = 0;
typedef struct transport transport;
typedef struct stream stream;
#define IF_TRACING(stmt) \
if (!(grpc_http_trace)) \
; \
@ -84,303 +82,6 @@ typedef struct stream stream;
else \
flowctl_trace(t, #dir, obj->dir##_window, id, delta)
/* streams are kept in various linked lists depending on what things need to
happen to them... this enum labels each list */
typedef enum {
/* streams that have pending writes */
WRITABLE = 0,
/* streams that have been selected to be written */
WRITING,
/* streams that have just been written, and included a close */
WRITTEN_CLOSED,
/* streams that have been cancelled and have some pending state updates
to perform */
CANCELLED,
/* streams that want to send window updates */
WINDOW_UPDATE,
/* streams that are waiting to start because there are too many concurrent
streams on the connection */
WAITING_FOR_CONCURRENCY,
/* streams that have finished reading: we wait until unlock to coalesce
all changes into one callback */
FINISHED_READ_OP,
MAYBE_FINISH_READ_AFTER_PARSE,
PARSER_CHECK_WINDOW_UPDATES_AFTER_PARSE,
OTHER_CHECK_WINDOW_UPDATES_AFTER_PARSE,
NEW_OUTGOING_WINDOW,
STREAM_LIST_COUNT /* must be last */
} stream_list_id;
/* deframer state for the overall http2 stream of bytes */
typedef enum {
/* prefix: one entry per http2 connection prefix byte */
DTS_CLIENT_PREFIX_0 = 0,
DTS_CLIENT_PREFIX_1,
DTS_CLIENT_PREFIX_2,
DTS_CLIENT_PREFIX_3,
DTS_CLIENT_PREFIX_4,
DTS_CLIENT_PREFIX_5,
DTS_CLIENT_PREFIX_6,
DTS_CLIENT_PREFIX_7,
DTS_CLIENT_PREFIX_8,
DTS_CLIENT_PREFIX_9,
DTS_CLIENT_PREFIX_10,
DTS_CLIENT_PREFIX_11,
DTS_CLIENT_PREFIX_12,
DTS_CLIENT_PREFIX_13,
DTS_CLIENT_PREFIX_14,
DTS_CLIENT_PREFIX_15,
DTS_CLIENT_PREFIX_16,
DTS_CLIENT_PREFIX_17,
DTS_CLIENT_PREFIX_18,
DTS_CLIENT_PREFIX_19,
DTS_CLIENT_PREFIX_20,
DTS_CLIENT_PREFIX_21,
DTS_CLIENT_PREFIX_22,
DTS_CLIENT_PREFIX_23,
/* frame header byte 0... */
/* must follow from the prefix states */
DTS_FH_0,
DTS_FH_1,
DTS_FH_2,
DTS_FH_3,
DTS_FH_4,
DTS_FH_5,
DTS_FH_6,
DTS_FH_7,
/* ... frame header byte 8 */
DTS_FH_8,
/* inside a http2 frame */
DTS_FRAME
} deframe_transport_state;
typedef enum {
WRITE_STATE_OPEN,
WRITE_STATE_QUEUED_CLOSE,
WRITE_STATE_SENT_CLOSE
} write_state;
typedef enum {
DONT_SEND_CLOSED = 0,
SEND_CLOSED,
SEND_CLOSED_WITH_RST_STREAM
} send_closed;
typedef struct {
stream *head;
stream *tail;
} stream_list;
typedef struct {
stream *next;
stream *prev;
} stream_link;
typedef enum {
ERROR_STATE_NONE,
ERROR_STATE_SEEN,
ERROR_STATE_NOTIFIED
} error_state;
/* We keep several sets of connection wide parameters */
typedef enum {
/* The settings our peer has asked for (and we have acked) */
PEER_SETTINGS = 0,
/* The settings we'd like to have */
LOCAL_SETTINGS,
/* The settings we've published to our peer */
SENT_SETTINGS,
/* The settings the peer has acked */
ACKED_SETTINGS,
NUM_SETTING_SETS
} setting_set;
/* Outstanding ping request data */
typedef struct {
gpr_uint8 id[8];
void (*cb)(void *user_data);
void *user_data;
} outstanding_ping;
typedef struct {
grpc_status_code status;
gpr_slice debug;
} pending_goaway;
struct transport {
grpc_transport base; /* must be first */
grpc_endpoint *ep;
grpc_mdctx *metadata_context;
gpr_refcount refs;
gpr_uint8 is_client;
gpr_mu mu;
gpr_cv cv;
/* basic state management - what are we doing at the moment? */
gpr_uint8 reading;
/** are we calling back any grpc_transport_op completion events */
gpr_uint8 calling_back_ops;
gpr_uint8 destroying;
gpr_uint8 closed;
error_state error_state;
/* stream indexing */
gpr_uint32 next_stream_id;
gpr_uint32 last_incoming_stream_id;
/* settings */
gpr_uint32 settings[NUM_SETTING_SETS][GRPC_CHTTP2_NUM_SETTINGS];
gpr_uint32 force_send_settings; /* bitmask of setting indexes to send out */
gpr_uint8 sent_local_settings; /* have local settings been sent? */
gpr_uint8 dirtied_local_settings; /* are the local settings dirty? */
/* window management */
gpr_uint32 outgoing_window;
gpr_uint32 outgoing_window_update;
gpr_uint32 incoming_window;
gpr_uint32 connection_window_target;
/* deframing */
deframe_transport_state deframe_state;
gpr_uint8 incoming_frame_type;
gpr_uint8 incoming_frame_flags;
gpr_uint8 header_eof;
gpr_uint32 expect_continuation_stream_id;
gpr_uint32 incoming_frame_size;
gpr_uint32 incoming_stream_id;
/* goaway */
pending_goaway *pending_goaways;
size_t num_pending_goaways;
size_t cap_pending_goaways;
/* state for a stream that's not yet been created */
grpc_stream_op_buffer new_stream_sopb;
/* stream ops that need to be destroyed, but outside of the lock */
grpc_stream_op_buffer nuke_later_sopb;
/* active parser */
void *parser_data;
stream *incoming_stream;
grpc_chttp2_parse_error (*parser)(void *parser_user_data,
grpc_chttp2_parse_state *state,
gpr_slice slice, int is_last);
stream_list lists[STREAM_LIST_COUNT];
grpc_chttp2_stream_map stream_map;
/* pings */
outstanding_ping *pings;
size_t ping_count;
size_t ping_capacity;
gpr_int64 ping_counter;
struct {
/* metadata object cache */
grpc_mdstr *str_grpc_timeout;
} constants;
struct {
/** data to write next write */
gpr_slice_buffer qbuf;
/* queued callbacks */
grpc_iomgr_closure *pending_closures;
} global;
struct {
/** is a thread currently writing */
gpr_uint8 executing;
/** closure to execute this action */
grpc_iomgr_closure action;
/** data to write now */
gpr_slice_buffer outbuf;
/* hpack encoding */
grpc_chttp2_hpack_compressor hpack_compressor;
} writing;
struct {
/** is a thread currently parsing */
gpr_uint8 executing;
/** data to write later - after parsing */
gpr_slice_buffer qbuf;
/** parser for headers */
grpc_chttp2_hpack_parser hpack_parser;
/** simple one shot parsers */
union {
grpc_chttp2_window_update_parser window_update;
grpc_chttp2_settings_parser settings;
grpc_chttp2_ping_parser ping;
grpc_chttp2_rst_stream_parser rst_stream;
} simple;
/** parser for goaway frames */
grpc_chttp2_goaway_parser goaway_parser;
} parsing;
struct {
/** is a thread currently performing channel callbacks */
gpr_uint8 executing;
/** transport channel-level callback */
const grpc_transport_callbacks *cb;
/** user data for cb calls */
void *cb_user_data;
/** closure for notifying transport closure */
grpc_iomgr_closure notify_closed;
} channel_callback;
};
struct stream {
struct {
grpc_iomgr_closure *send_done_closure;
grpc_iomgr_closure *recv_done_closure;
} global;
struct {
/* sops that have passed flow control to be written */
grpc_stream_op_buffer sopb;
/* how strongly should we indicate closure with the next write */
send_closed send_closed;
} writing;
struct {
int unused;
} parsing;
gpr_uint32 id;
gpr_uint32 incoming_window;
gpr_int64 outgoing_window;
gpr_uint32 outgoing_window_update;
/* when the application requests writes be closed, the write_closed is
'queued'; when the close is flow controlled into the send path, we are
'sending' it; when the write has been performed it is 'sent' */
write_state write_state;
gpr_uint8 read_closed;
gpr_uint8 cancelled;
stream_link links[STREAM_LIST_COUNT];
gpr_uint8 included[STREAM_LIST_COUNT];
/* incoming metadata */
grpc_linked_mdelem *incoming_metadata;
size_t incoming_metadata_count;
size_t incoming_metadata_capacity;
grpc_linked_mdelem *old_incoming_metadata;
gpr_timespec incoming_deadline;
/* sops from application */
grpc_stream_op_buffer *outgoing_sopb;
grpc_stream_op_buffer *incoming_sopb;
grpc_stream_state *publish_state;
grpc_stream_state published_state;
grpc_chttp2_data_parser parser;
grpc_stream_state callback_state;
grpc_stream_op_buffer callback_sopb;
};
static const grpc_transport_vtable vtable;
static void push_setting(transport *t, grpc_chttp2_setting_id id,

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