Files
addr2line
adler
ahash
aho_corasick
ansi_term
anyhow
arc_swap
arrayref
arrayvec
ascii
assert_matches
async_stream
async_stream_impl
async_trait
atty
auto_enums
auto_enums_core
auto_enums_derive
backoff
backtrace
base32
base64
bincode
bip39
bitflags
bitvec
blake3
block_buffer
block_padding
borsh
borsh_derive
borsh_derive_internal
borsh_schema_derive_internal
bs58
bstr
bv
byte_slice_cast
byte_unit
bytecount
byteorder
bytes
bzip2
bzip2_sys
cargo_build_bpf
cargo_metadata
cargo_platform
cargo_test_bpf
cast
cc
cfg_if
chrono
chrono_humanize
clap
colored
combine
console
const_fn
constant_time_eq
core_affinity
cpufeatures
crc32fast
criterion_stats
crossbeam_channel
crossbeam_deque
crossbeam_epoch
crossbeam_queue
crossbeam_utils
crunchy
crypto_mac
csv
csv_core
ctrlc
curve25519_dalek
dashmap
derivative
derive_more
derive_utils
dialoguer
digest
dir_diff
dirs_next
dirs_sys_next
dlopen
dlopen_derive
doc_comment
dtoa
ed25519
ed25519_dalek
either
encoding_rs
enum_iterator
enum_iterator_derive
env_logger
ethabi
ethbloom
ethereum
ethereum_types
evm
evm_bridge
evm_core
evm_gasometer
evm_rpc
evm_runtime
evm_state
evm_utils
failure
failure_derive
fake_simd
fast_math
fd_lock
filetime
fixed_hash
flate2
fnv
foreign_types
foreign_types_shared
form_urlencoded
fs_extra
futures
futures_channel
futures_core
futures_executor
futures_io
futures_macro
futures_sink
futures_task
futures_util
async_await
future
io
lock
sink
stream
task
gag
generic_array
gethostname
getrandom
gimli
globset
goauth
goblin
h2
half
hash256_std_hasher
hash32
hash_db
hashbrown
heck
hex
hidapi
histogram
hmac
hmac_drbg
http
http_body
httparse
httpdate
humantime
hyper
hyper_rustls
hyper_tls
idna
ieee754
impl_codec
impl_rlp
impl_serde
indexed
indexmap
indicatif
inflector
cases
camelcase
case
classcase
kebabcase
pascalcase
screamingsnakecase
sentencecase
snakecase
tablecase
titlecase
traincase
numbers
deordinalize
ordinalize
string
constants
deconstantize
demodulize
pluralize
singularize
suffix
foreignkey
input_buffer
instant
iovec
ipnet
itertools
itoa
jemalloc_ctl
jemalloc_sys
jemallocator
jobserver
jsonrpc_client_transports
jsonrpc_core
jsonrpc_core_client
jsonrpc_derive
jsonrpc_http_server
jsonrpc_pubsub
jsonrpc_server_utils
jsonrpc_ws_server
keccak
keccak_hash
keccak_hasher
kernel32
lazy_static
lazycell
libc
libloading
librocksdb_sys
linked_hash_map
lock_api
log
lru
matches
maybe_uninit
memchr
memmap2
memoffset
mime
mime_guess
miniz_oxide
mio
mio_extras
miow
native_tls
net2
nix
num_cpus
num_derive
num_enum
num_enum_derive
num_integer
num_traits
number_prefix
object
once_cell
opaque_debug
openssl
openssl_probe
openssl_sys
ouroboros
ouroboros_macro
parity_scale_codec
parity_scale_codec_derive
parity_ws
parking_lot
parking_lot_core
paste
paste_impl
paw
paw_attributes
paw_raw
pbkdf2
percent_encoding
pest
pickledb
pin_project
pin_project_lite
pin_utils
plain
ppv_lite86
pretty_hex
primitive_types
proc_macro2
proc_macro_crate
proc_macro_error
proc_macro_error_attr
proc_macro_hack
proc_macro_nested
prost
prost_derive
prost_types
quote
radium
rand
rand_chacha
rand_core
rand_isaac
raptorq
rayon
rayon_core
reed_solomon_erasure
regex
regex_automata
regex_syntax
remove_dir_all
reqwest
retain_mut
ring
ripemd160
rlp
rlp_derive
rocksdb
rpassword
rustc_demangle
rustc_hash
rustc_hex
rustls
rustversion
ryu
same_file
scopeguard
scroll
scroll_derive
sct
secp256k1
secp256k1_sys
semver
semver_parser
serde
serde_bytes
serde_cbor
serde_derive
serde_json
serde_urlencoded
serde_yaml
sha1
sha2
sha3
signal_hook
signal_hook_registry
signature
simpl
simple_logger
slab
smallvec
smpl_jwt
snafu
snafu_derive
socket2
solana_account_decoder
solana_accounts_bench
solana_banking_bench
solana_banks_client
solana_banks_interface
solana_banks_server
solana_bench_exchange
solana_bench_streamer
solana_bench_tps
solana_bench_tps_evm
solana_bpf_loader_program
solana_budget_program
solana_clap_utils
solana_cli
solana_cli_config
solana_cli_output
solana_client
solana_config_program
solana_core
solana_crate_features
solana_csv_to_validator_infos
solana_dos
solana_download_utils
solana_evm_loader_program
solana_exchange_program
solana_failure_program
solana_faucet
solana_frozen_abi
solana_frozen_abi_macro
solana_genesis
solana_ip_address
solana_ip_address_server
solana_ledger
solana_ledger_tool
solana_ledger_udev
solana_local_cluster
solana_log_analyzer
solana_logger
solana_measure
solana_merkle_root_bench
solana_merkle_tree
solana_metrics
solana_net_shaper
solana_net_utils
solana_noop_program
solana_notifier
solana_ownable
solana_perf
solana_poh_bench
solana_program
solana_program_test
solana_ramp_tps
solana_rayon_threadlimit
solana_rbpf
solana_remote_wallet
solana_runtime
solana_sdk
solana_sdk_macro
solana_secp256k1_program
solana_sleep_program
solana_stake_accounts
solana_stake_monitor
solana_stake_o_matic
solana_stake_program
solana_storage_bigtable
solana_storage_proto
solana_store_tool
solana_streamer
solana_sys_tuner
solana_tokens
solana_transaction_status
solana_upload_perf
solana_version
solana_vest_program
solana_vote_program
solana_watchtower
spin
spl_associated_token_account
spl_memo
spl_token
stable_deref_trait
standback
static_assertions
strsim
structopt
structopt_derive
subtle
symlink
syn
synstructure
sysctl
tar
tarpc
tarpc_plugins
tempfile
termcolor
terminal_size
textwrap
thiserror
thiserror_impl
thread_scoped
time
time_macros
time_macros_impl
tiny_keccak
tinyvec
tinyvec_macros
tokio
fs
future
io
loom
macros
net
park
process
runtime
signal
stream
sync
task
time
util
tokio_codec
tokio_executor
tokio_fs
tokio_io
tokio_reactor
tokio_rustls
tokio_serde
tokio_sync
tokio_tcp
tokio_threadpool
tokio_tls
tokio_util
toml
tonic
tower
tower_balance
tower_buffer
tower_discover
tower_layer
tower_limit
tower_load
tower_load_shed
tower_make
tower_ready_cache
tower_retry
tower_service
tower_timeout
tower_util
tracing
tracing_attributes
tracing_core
tracing_futures
trees
triedb
triehash
try_lock
tungstenite
typenum
ucd_trie
uint
unicase
unicode_bidi
unicode_normalization
unicode_segmentation
unicode_width
unicode_xid
unix_socket
unreachable
untrusted
url
users
utf8
utf8_width
vec_map
velas
velas_account_program
velas_faucet
velas_genesis
velas_gossip
velas_install
velas_install_init
velas_keygen
velas_test_validator
velas_validator
void
walkdir
want
webpki
webpki_roots
websocket
websocket_base
winapi
ws2_32
xattr
yaml_rust
zeroize
zeroize_derive
zstd
zstd_safe
zstd_sys
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
use crate::stream::{Fuse, FuturesOrdered, StreamExt, IntoStream};
use crate::future::{IntoFuture, TryFutureExt};
use futures_core::future::TryFuture;
use futures_core::stream::{Stream, TryStream};
use futures_core::task::{Context, Poll};
#[cfg(feature = "sink")]
use futures_sink::Sink;
use pin_project_lite::pin_project;
use core::pin::Pin;

pin_project! {
    /// Stream for the [`try_buffered`](super::TryStreamExt::try_buffered) method.
    #[derive(Debug)]
    #[must_use = "streams do nothing unless polled"]
    pub struct TryBuffered<St>
    where
        St: TryStream,
        St::Ok: TryFuture,
    {
        #[pin]
        stream: Fuse<IntoStream<St>>,
        in_progress_queue: FuturesOrdered<IntoFuture<St::Ok>>,
        max: usize,
    }
}

impl<St> TryBuffered<St>
where
    St: TryStream,
    St::Ok: TryFuture,
{
    pub(super) fn new(stream: St, n: usize) -> Self {
        Self {
            stream: IntoStream::new(stream).fuse(),
            in_progress_queue: FuturesOrdered::new(),
            max: n,
        }
    }

    delegate_access_inner!(stream, St, (. .));
}

impl<St> Stream for TryBuffered<St>
where
    St: TryStream,
    St::Ok: TryFuture<Error = St::Error>,
{
    type Item = Result<<St::Ok as TryFuture>::Ok, St::Error>;

    fn poll_next(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Option<Self::Item>> {
        let mut this = self.project();

        // First up, try to spawn off as many futures as possible by filling up
        // our queue of futures. Propagate errors from the stream immediately.
        while this.in_progress_queue.len() < *this.max {
            match this.stream.as_mut().poll_next(cx)? {
                Poll::Ready(Some(fut)) => this.in_progress_queue.push(fut.into_future()),
                Poll::Ready(None) | Poll::Pending => break,
            }
        }

        // Attempt to pull the next value from the in_progress_queue
        match this.in_progress_queue.poll_next_unpin(cx) {
            x @ Poll::Pending | x @ Poll::Ready(Some(_)) => return x,
            Poll::Ready(None) => {}
        }

        // If more values are still coming from the stream, we're not done yet
        if this.stream.is_done() {
            Poll::Ready(None)
        } else {
            Poll::Pending
        }
    }
}

// Forwarding impl of Sink from the underlying stream
#[cfg(feature = "sink")]
impl<S, Item, E> Sink<Item> for TryBuffered<S>
where
    S: TryStream + Sink<Item, Error = E>,
    S::Ok: TryFuture<Error = E>,
{
    type Error = E;

    delegate_sink!(stream, Item);
}