FreeCalypso > hg > gsm-codec-lib

annotate libgsmefr/tls_flags.c @ 262:573afa985df6

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libgsmfr2: split pp_state.h from pp_internal.h
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 13 Apr 2024 00:43:36 +0000
parents 38326102fc43
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
38
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * Unfortunately the code we got from ETSI makes heavy use of two global
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * Boolean flags named Carry and Overflow that function like equally named
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * processor state flags on many CPU architectures. They are not part
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * of persistent codec session state for either the encoder or the decoder,
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * instead they are "short-term" globals much like UNIX errno.
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 * Given this unfortunate reality plus the natural desire to make our
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 * EFR library thread-safe (a transcoding MGW handling a large volume of
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * simultaneous calls is exactly the kind of application that would benefit
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * from utilitizing all CPU cores), our current workaround is to use
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 * thread-local storage.
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 */
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 #include <stdint.h>
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #include "typedef.h"
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17
38326102fc43 libgsmefr: beginning to integrate code from ETSI
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 __thread Flag EFR__Carry, EFR__Overflow;