vppinfra: Expose function setting __os_thread_index - vpp

diff options

author	Nathan Skrzypczak <nathan.skrzypczak@gmail.com>	2019-08-01 18:14:06 +0200
committer	Florin Coras <florin.coras@gmail.com>	2019-08-02 16:49:01 +0000
commit	d516ca42d3fcbdc5da9877ab07298f8bb891bff3 (patch)
tree	e351bfa07a58042552e9424776b022d7fae25aed /test/test_tcp.py
parent	edfe0eea7a938e650074fcb82a971187a7beb12e (diff)

vppinfra: Expose function setting __os_thread_index

Type: feature This is needed when creating pthreads in client applications, they need a way to set __os_thread_index per thread that does not conflict with the binary API thread index. If __os_thread_index is left to 0 in two client pthreads and they call vl_msg_api_alloc and vec_resize at the same time it can fail due to them sharing (and push/poping) the same clib_per_cpu_mheaps slot. Change-Id: I85d4248a39b641a4d3ad5a1c1bd6e0db5875fab6 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>

Diffstat (limited to 'test/test_tcp.py')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (c) 2015 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* Copyright (c) 2005 Eliot Dresselhaus Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #ifndef included_clib_random_buffer_h #define included_clib_random_buffer_h #include <vppinfra/clib.h> #include <vppinfra/random_isaac.h> #include <vppinfra/warnings.h> /* *INDENT-OFF* */ WARN_OFF(array-bounds) /* *INDENT-ON* */ typedef struct { /* Two parallel ISAAC contexts for speed. */ isaac_t ctx[2]; /* Random buffer. */ uword *buffer; /* Cache up to 1 word worth of bytes for random data less than one word at a time. */ uword n_cached_bytes; union { u8 cached_bytes[sizeof (uword)]; uword cached_word; }; } clib_random_buffer_t; always_inline void clib_random_buffer_free (clib_random_buffer_t * b) { vec_free (b->buffer); } /* Fill random buffer. */ void clib_random_buffer_fill (clib_random_buffer_t * b, uword n_words); /* Initialize random buffer. */ void clib_random_buffer_init (clib_random_buffer_t * b, uword seed); /* Returns word aligned random data, possibly filling buffer. */ always_inline void * clib_random_buffer_get_data (clib_random_buffer_t * b, uword n_bytes) { uword n_words, i, l; l = b->n_cached_bytes; if (n_bytes <= l) { b->n_cached_bytes = l - n_bytes; return &b->cached_bytes[l - n_bytes]; } n_words = n_bytes / sizeof (uword); if (n_bytes % sizeof (uword)) n_words++; /* Enough random words left? */ if (PREDICT_FALSE (n_words > vec_len (b->buffer))) clib_random_buffer_fill (b, n_words); i = vec_len (b->buffer) - n_words; vec_set_len (b->buffer, i); if (n_bytes < sizeof (uword)) { b->cached_word = b->buffer[i]; b->n_cached_bytes = sizeof (uword) - n_bytes; return &b->cached_bytes[sizeof (uword) - n_bytes]; } else return b->buffer + i; } /* *INDENT-OFF* */ WARN_ON(array-bounds) /* *INDENT-ON* */ #endif /* included_clib_random_buffer_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


context:
space:
mode: