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osmo-trx
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ms-trx support

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This is basically a trxcon that includes a transceiver, and can just
be used with existing and future apps supporting the trxcon interface,
i.e. mobile or ccch_scan.

Supports bladerf and uhd.
Currently using hardcoded sched/prios aimed at a setup with working,
reliable usb and reserved cores, for example a raspi 4 (ONLY 4, not 3,
not 2, not any other version)

Additionally builds test tools used for development: osmo-trx-syncthing*

see https://osmocom.org/projects/baseband/wiki/MS-side_GPRS for the
project description and details

Change-Id: I36c65a8c725c4da76dc70006cd96b0a2b6878e84
changes/16/30416/33
Eric Wild 4 months ago committed by Hoernchen
parent 5a23a24bb1
commit b7253c6fdc
22 changed files with 3538 additions and 9 deletions
Show Stats Download Patch File Download Diff File

7
.gitignore vendored
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@ -7,6 +7,13 @@ Transceiver52M/osmo-trx-usrp1
Transceiver52M/osmo-trx-lms
Transceiver52M/osmo-trx-ipc
Transceiver52M/osmo-trx-blade
Transceiver52M/osmo-trx-ipc2
Transceiver52M/osmo-trx-syncthing-blade
Transceiver52M/osmo-trx-syncthing-uhd
Transceiver52M/osmo-trx-syncthing-ipc
Transceiver52M/osmo-trx-ms-blade
Transceiver52M/osmo-trx-ms-uhd
Transceiver52M/osmo-trx-ms-ipc
Transceiver52M/device/ipc/uhddev_ipc.cpp
.clang-format

8
Makefile.am
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@ -26,8 +26,14 @@ AM_CXXFLAGS = -Wall -pthread
#AM_CXXFLAGS = -Wall -O2 -NDEBUG -pthread
#AM_CFLAGS = -Wall -O2 -NDEBUG -pthread
SUBDIRS =
if ENABLE_MS_TRX
SUBDIRS += osmocom-bb/src/host/trxcon
endif
# Order must be preserved
SUBDIRS = \
SUBDIRS += \
CommonLibs \
GSM \
Transceiver52M \

70
Transceiver52M/Makefile.am
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@ -73,6 +73,36 @@ COMMON_LDADD = \
$(LIBOSMOCTRL_LIBS) \
$(LIBOSMOVTY_LIBS)
if ENABLE_MS_TRX
AM_CPPFLAGS += -I$(top_srcdir)/osmocom-bb/src/host/trxcon/include/
AM_CPPFLAGS += -I${srcdir}
TRXCON_LDADD = \
$(top_builddir)/osmocom-bb/src/host/trxcon/src/.libs/libtrxcon.a \
$(top_builddir)/osmocom-bb/src/host/trxcon/src/.libs/libl1sched.a \
$(LIBOSMOCODING_LIBS)
MS_SOURCES = \
ms/sch.c \
ms/ms.cpp \
ms/ms_rx_lower.cpp \
grgsm_vitac/grgsm_vitac.cpp \
grgsm_vitac/viterbi_detector.cc
noinst_HEADERS += \
ms/ms.h \
ms/bladerf_specific.h \
ms/uhd_specific.h \
ms/ms_rx_burst.h \
ms/ms_upper.h \
ms/itrq.h \
ms/sch.h \
grgsm_vitac/viterbi_detector.h \
grgsm_vitac/constants.h \
grgsm_vitac/grgsm_vitac.h
endif
bin_PROGRAMS =
if DEVICE_UHD
@ -83,6 +113,26 @@ osmo_trx_uhd_LDADD = \
$(COMMON_LDADD) \
$(UHD_LIBS)
osmo_trx_uhd_CPPFLAGS = $(AM_CPPFLAGS) $(UHD_CFLAGS)
if ENABLE_MS_TRX
bin_PROGRAMS += osmo-trx-ms-uhd
osmo_trx_ms_uhd_SOURCES = $(MS_SOURCES) ms/ms_upper.cpp ms/l1ctl_server.c ms/logging.c ms/l1ctl_server_cb.cpp
osmo_trx_ms_uhd_LDADD = \
$(builddir)/device/uhd/libdevice.la \
$(COMMON_LDADD) \
$(UHD_LIBS) \
$(TRXCON_LDADD)
osmo_trx_ms_uhd_CPPFLAGS = $(AM_CPPFLAGS) $(UHD_CFLAGS) -DBUILDUHD
bin_PROGRAMS += osmo-trx-syncthing-uhd
osmo_trx_syncthing_uhd_SOURCES = $(MS_SOURCES) ms/ms_rx_burst_test.cpp
osmo_trx_syncthing_uhd_LDADD = \
$(builddir)/device/uhd/libdevice.la \
$(COMMON_LDADD) \
$(UHD_LIBS) \
$(TRXCON_LDADD)
osmo_trx_syncthing_uhd_CPPFLAGS = $(AM_CPPFLAGS) $(UHD_CFLAGS) -DSYNCTHINGONLY -DBUILDUHD
endif
endif
if DEVICE_USRP1
@ -114,6 +164,25 @@ osmo_trx_blade_LDADD = \
$(BLADE_LIBS)
osmo_trx_blade_CPPFLAGS = $(AM_CPPFLAGS) $(LMS_CFLAGS)
if ENABLE_MS_TRX
bin_PROGRAMS += osmo-trx-ms-blade
osmo_trx_ms_blade_SOURCES = $(MS_SOURCES) ms/ms_upper.cpp ms/l1ctl_server.c ms/logging.c ms/l1ctl_server_cb.cpp
osmo_trx_ms_blade_LDADD = \
$(builddir)/device/bladerf/libdevice.la \
$(COMMON_LDADD) \
$(BLADE_LIBS) \
$(TRXCON_LDADD)
osmo_trx_ms_blade_CPPFLAGS = $(AM_CPPFLAGS) $(BLADE_CFLAGS) -DBUILDBLADE
bin_PROGRAMS += osmo-trx-syncthing-blade
osmo_trx_syncthing_blade_SOURCES = $(MS_SOURCES) ms/ms_rx_burst_test.cpp
osmo_trx_syncthing_blade_LDADD = \
$(builddir)/device/bladerf/libdevice.la \
$(COMMON_LDADD) \
$(BLADE_LIBS) \
$(TRXCON_LDADD)
osmo_trx_syncthing_blade_CPPFLAGS = $(AM_CPPFLAGS) $(BLADE_CFLAGS) -DSYNCTHINGONLY -DBUILDBLADE -I../device/ipc
endif
endif
if DEVICE_IPC
@ -124,4 +193,3 @@ osmo_trx_ipc_LDADD = \
$(COMMON_LDADD)
osmo_trx_ipc_CPPFLAGS = $(AM_CPPFLAGS)
endif

2
Transceiver52M/grgsm_vitac/grgsm_vitac.cpp
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@ -74,7 +74,7 @@ void initvita() {
}
MULTI_VER_TARGET_ATTR
MULTI_VER_TARGET_ATTR NO_UBSAN
void detect_burst(const gr_complex *input, gr_complex *chan_imp_resp, int burst_start, char *output_binary)
{
std::vector<gr_complex> rhh_temp(CHAN_IMP_RESP_LENGTH * d_OSR);

10
Transceiver52M/grgsm_vitac/grgsm_vitac.h
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@ -35,13 +35,21 @@
#endif
#endif
/* ... but apaprently clang disagrees... */
/* ... but apparently clang disagrees... */
#if defined(__clang__)
#define MULTI_VER_TARGET_ATTR_CLANGONLY MULTI_VER_TARGET_ATTR
#else
#define MULTI_VER_TARGET_ATTR_CLANGONLY
#endif
#if defined(__has_attribute)
#if __has_attribute(no_sanitize)
#define NO_UBSAN __attribute__((no_sanitize("undefined")))
#endif
#else
#define NO_UBSAN
#endif
#define SYNC_SEARCH_RANGE 30
const int d_OSR(4);

451
Transceiver52M/ms/bladerf_specific.h
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@ -0,0 +1,451 @@
#pragma once
/*
* (C) 2022 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* Author: Eric Wild <ewild@sysmocom.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "itrq.h"
#include <atomic>
#include <complex>
#include <cstdint>
#include <functional>
#include <iostream>
#include <cassert>
#include <cstring>
#include <libbladeRF.h>
#include <Timeval.h>
#include <unistd.h>
const size_t BLADE_BUFFER_SIZE = 1024 * 1;
const size_t BLADE_NUM_BUFFERS = 32 * 1;
const size_t NUM_TRANSFERS = 16 * 2;
const int SAMPLE_SCALE_FACTOR = 15; // actually 16 but sigproc complains about clipping..
// see https://en.cppreference.com/w/cpp/language/parameter_pack "Brace-enclosed initializers" example
template <typename Arg, typename... Args> void expand_args(std::ostream &out, Arg &&arg, Args &&...args)
{
out << '(' << std::forward<Arg>(arg);
(void)(int[]){ 0, (void((out << "," << std::forward<Args>(args))), 0)... };
out << ')' << std::endl;
}
template <class R, class... Args> using RvalFunc = R (*)(Args...);
template <class R, class... Args>
R exec_and_check(RvalFunc<R, Args...> func, const char *fname, const char *finame, const char *funcname, int line,
Args... args)
{
R rval = func(std::forward<Args>(args)...);
if (rval != 0) {
std::cerr << ((rval >= 0) ? "OK:" : bladerf_strerror(rval)) << ':' << finame << ':' << line << ':'
<< funcname << ':' << fname;
expand_args(std::cerr, args...);
}
return rval;
}
// only macros can pass a func name string
#define blade_check(func, ...) exec_and_check(func, #func, __FILE__, __FUNCTION__, __LINE__, __VA_ARGS__)
#pragma pack(push, 1)
using blade_sample_type = std::complex<int16_t>;
enum class blade_speed_buffer_type { HS, SS };
template <blade_speed_buffer_type T> struct blade_usb_message {
uint32_t reserved;
uint64_t ts;
uint32_t meta_flags;
blade_sample_type d[(T == blade_speed_buffer_type::SS ? 512 : 256) - 4];
};
static_assert(sizeof(blade_usb_message<blade_speed_buffer_type::SS>) == 2048, "blade buffer mismatch!");
static_assert(sizeof(blade_usb_message<blade_speed_buffer_type::HS>) == 1024, "blade buffer mismatch!");
template <unsigned int SZ, blade_speed_buffer_type T> struct blade_otw_buffer {
static_assert((SZ >= 2 && !(SZ % 2)), "min size is 2x usb buffer!");
blade_usb_message<T> m[SZ];
int actual_samples_per_msg()
{
return sizeof(blade_usb_message<T>::d) / sizeof(typeof(blade_usb_message<T>::d[0]));
}
int actual_samples_per_buffer()
{
return SZ * actual_samples_per_msg();
}
int samples_per_buffer()
{
return SZ * sizeof(blade_usb_message<T>) / sizeof(typeof(blade_usb_message<T>::d[0]));
}
int num_msgs_per_buffer()
{
return SZ;
}
auto get_first_ts()
{
return m[0].ts;
}
constexpr auto *getsampleoffset(int ofs)
{
auto full = ofs / actual_samples_per_msg();
auto rem = ofs % actual_samples_per_msg();
return &m[full].d[rem];
}
int readall(blade_sample_type *outaddr)
{
blade_sample_type *addr = outaddr;
for (unsigned int i = 0; i < SZ; i++) {
memcpy(addr, &m[i].d[0], actual_samples_per_msg() * sizeof(blade_sample_type));
addr += actual_samples_per_msg();
}
return actual_samples_per_buffer();
}
int read_n(blade_sample_type *outaddr, int start, int num)
{
assert((start + num) <= actual_samples_per_buffer());
assert(start >= 0);
if (!num)
return 0;
// which buffer?
int start_buf_idx = (start > 0) ? start / actual_samples_per_msg() : 0;
// offset from actual buffer start
auto start_offset_in_buf = (start - (start_buf_idx * actual_samples_per_msg()));
auto samp_rem_in_first_buf = actual_samples_per_msg() - start_offset_in_buf;
auto remaining_first_buf = num > samp_rem_in_first_buf ? samp_rem_in_first_buf : num;
memcpy(outaddr, &m[start_buf_idx].d[start_offset_in_buf],
remaining_first_buf * sizeof(blade_sample_type));
outaddr += remaining_first_buf;
auto remaining = num - remaining_first_buf;
if (!remaining)
return num;
start_buf_idx++;
auto rem_full_bufs = remaining / actual_samples_per_msg();
remaining -= rem_full_bufs * actual_samples_per_msg();
for (int i = 0; i < rem_full_bufs; i++) {
memcpy(outaddr, &m[start_buf_idx++].d[0], actual_samples_per_msg() * sizeof(blade_sample_type));
outaddr += actual_samples_per_msg();
}
if (remaining)
memcpy(outaddr, &m[start_buf_idx].d[0], remaining * sizeof(blade_sample_type));
return num;
}
int write_n_burst(blade_sample_type *in, int num, uint64_t first_ts)
{
assert(num <= actual_samples_per_buffer());
int len_rem = num;
for (unsigned int i = 0; i < SZ; i++) {
m[i] = {};
m[i].ts = first_ts + i * actual_samples_per_msg();
if (len_rem) {
int max_to_copy =
len_rem > actual_samples_per_msg() ? actual_samples_per_msg() : len_rem;
memcpy(&m[i].d[0], in, max_to_copy * sizeof(blade_sample_type));
len_rem -= max_to_copy;
in += actual_samples_per_msg();
}
}
return num;
}
};
#pragma pack(pop)
template <unsigned int SZ, blade_speed_buffer_type T> struct blade_otw_buffer_helper {
static_assert((SZ >= 1024 && ((SZ & (SZ - 1)) == 0)), "only buffer size multiples of 1024 allowed!");
static blade_otw_buffer<SZ / 512, T> x;
};
using dev_buf_t = typeof(blade_otw_buffer_helper<BLADE_BUFFER_SIZE, blade_speed_buffer_type::SS>::x);
// using buf_in_use = blade_otw_buffer<2, blade_speed_buffer_type::SS>;
using bh_fn_t = std::function<int(dev_buf_t *)>;
template <typename T> struct blade_hw {
struct bladerf *dev;
struct bladerf_stream *rx_stream;
struct bladerf_stream *tx_stream;
// using pkt2buf = blade_otw_buffer<2, blade_speed_buffer_type::SS>;
using tx_buf_q_type = spsc_cond<BLADE_NUM_BUFFERS, dev_buf_t *, true, false>;
const unsigned int rxFullScale, txFullScale;
const int rxtxdelay;
float rxgain, txgain;
static std::atomic<bool> stop_me_flag;
struct ms_trx_config {
int tx_freq;
int rx_freq;
int sample_rate;
int bandwidth;
public:
ms_trx_config() : tx_freq(881e6), rx_freq(926e6), sample_rate(((1625e3 / 6) * 4)), bandwidth(1e6)
{
}
} cfg;
struct buf_mgmt {
void **rx_samples;
void **tx_samples;
tx_buf_q_type bufptrqueue;
} buf_mgmt;
virtual ~blade_hw()
{
close_device();
}
blade_hw() : rxFullScale(2047), txFullScale(2047), rxtxdelay(-60)
{
}
void close_device()
{
if (dev) {
if (tx_stream) {
bladerf_deinit_stream(tx_stream);
}
if (rx_stream) {
bladerf_deinit_stream(rx_stream);
}
bladerf_enable_module(dev, BLADERF_MODULE_RX, false);
bladerf_enable_module(dev, BLADERF_MODULE_TX, false);
bladerf_close(dev);
dev = NULL;
}
}
int init_device(bh_fn_t rxh, bh_fn_t txh)
{
struct bladerf_rational_rate rate = { 0, static_cast<uint64_t>((1625e3 * 4)) * 64, 6 * 64 }, actual;
bladerf_log_set_verbosity(BLADERF_LOG_LEVEL_DEBUG);
bladerf_set_usb_reset_on_open(true);
blade_check(bladerf_open, &dev, "");
if (!dev) {
std::cerr << "open failed, device missing?" << std::endl;
exit(0);
}
if (bladerf_device_speed(dev) != bladerf_dev_speed::BLADERF_DEVICE_SPEED_SUPER) {
std::cerr << "open failed, only superspeed (usb3) supported!" << std::endl;
return -1;
}
blade_check(bladerf_set_tuning_mode, dev, bladerf_tuning_mode::BLADERF_TUNING_MODE_FPGA);
bool is_locked;
blade_check(bladerf_set_pll_enable, dev, true);
blade_check(bladerf_set_pll_refclk, dev, 10000000UL);
for (int i = 0; i < 20; i++) {
usleep(50 * 1000);
bladerf_get_pll_lock_state(dev, &is_locked);
if (is_locked)
break;
}
if (!is_locked) {
std::cerr << "unable to lock refclk!" << std::endl;
return -1;
}
blade_check(bladerf_set_rational_sample_rate, dev, BLADERF_CHANNEL_RX(0), &rate, &actual);
blade_check(bladerf_set_rational_sample_rate, dev, BLADERF_CHANNEL_TX(0), &rate, &actual);
blade_check(bladerf_set_frequency, dev, BLADERF_CHANNEL_RX(0), (bladerf_frequency)cfg.rx_freq);
blade_check(bladerf_set_frequency, dev, BLADERF_CHANNEL_TX(0), (bladerf_frequency)cfg.tx_freq);
blade_check(bladerf_set_bandwidth, dev, BLADERF_CHANNEL_RX(0), (bladerf_bandwidth)cfg.bandwidth,
(bladerf_bandwidth *)NULL);
blade_check(bladerf_set_bandwidth, dev, BLADERF_CHANNEL_TX(0), (bladerf_bandwidth)cfg.bandwidth,
(bladerf_bandwidth *)NULL);
blade_check(bladerf_set_gain_mode, dev, BLADERF_CHANNEL_RX(0), BLADERF_GAIN_MGC);
blade_check(bladerf_set_gain, dev, BLADERF_CHANNEL_RX(0), (bladerf_gain)30);
blade_check(bladerf_set_gain, dev, BLADERF_CHANNEL_TX(0), (bladerf_gain)30);
usleep(1000);
blade_check(bladerf_enable_module, dev, BLADERF_MODULE_RX, true);
usleep(1000);
blade_check(bladerf_enable_module, dev, BLADERF_MODULE_TX, true);
usleep(1000);
blade_check(bladerf_init_stream, &rx_stream, dev, getrxcb(rxh), &buf_mgmt.rx_samples, BLADE_NUM_BUFFERS,
BLADERF_FORMAT_SC16_Q11_META, BLADE_BUFFER_SIZE, NUM_TRANSFERS, (void *)this);
blade_check(bladerf_init_stream, &tx_stream, dev, gettxcb(txh), &buf_mgmt.tx_samples, BLADE_NUM_BUFFERS,
BLADERF_FORMAT_SC16_Q11_META, BLADE_BUFFER_SIZE, NUM_TRANSFERS, (void *)this);
for (unsigned int i = 0; i < BLADE_NUM_BUFFERS; i++) {
auto cur_buffer = reinterpret_cast<tx_buf_q_type::elem_t *>(buf_mgmt.tx_samples);
buf_mgmt.bufptrqueue.spsc_push(&cur_buffer[i]);
}
setRxGain(20);
setTxGain(30);
usleep(1000);
// bladerf_set_stream_timeout(dev, BLADERF_TX, 4);
// bladerf_set_stream_timeout(dev, BLADERF_RX, 4);
return 0;
}
bool tuneTx(double freq, size_t chan = 0)
{
msleep(15);
blade_check(bladerf_set_frequency, dev, BLADERF_CHANNEL_TX(0), (bladerf_frequency)freq);
msleep(15);
return true;
};
bool tuneRx(double freq, size_t chan = 0)
{
msleep(15);
blade_check(bladerf_set_frequency, dev, BLADERF_CHANNEL_RX(0), (bladerf_frequency)freq);
msleep(15);
return true;
};
bool tuneRxOffset(double offset, size_t chan = 0)
{
return true;
};
double setRxGain(double dB, size_t chan = 0)
{
rxgain = dB;
msleep(15);
blade_check(bladerf_set_gain, dev, BLADERF_CHANNEL_RX(0), (bladerf_gain)dB);
msleep(15);
return dB;
};
double setTxGain(double dB, size_t chan = 0)
{
txgain = dB;
msleep(15);
blade_check(bladerf_set_gain, dev, BLADERF_CHANNEL_TX(0), (bladerf_gain)dB);
msleep(15);
return dB;
};
int setPowerAttenuation(int atten, size_t chan = 0)
{
return atten;
};
static void check_timestamp(dev_buf_t *rcd)
{
static bool first = true;
static uint64_t last_ts;
if (first) {
first = false;
last_ts = rcd->m[0].ts;
} else if (last_ts + rcd->actual_samples_per_buffer() != rcd->m[0].ts) {
std::cerr << "RX Overrun!" << last_ts << " " << rcd->actual_samples_per_buffer() << " "
<< last_ts + rcd->actual_samples_per_buffer() << " " << rcd->m[0].ts << std::endl;
last_ts = rcd->m[0].ts;
} else {
last_ts = rcd->m[0].ts;
}
}
bladerf_stream_cb getrxcb(bh_fn_t rxbh)
{
// C cb -> no capture!
static auto rxbhfn = rxbh;
return [](struct bladerf *dev, struct bladerf_stream *stream, struct bladerf_metadata *meta,
void *samples, size_t num_samples, void *user_data) -> void * {
// struct blade_hw *trx = (struct blade_hw *)user_data;
static int to_skip = 0;
dev_buf_t *rcd = (dev_buf_t *)samples;
if (stop_me_flag)
return BLADERF_STREAM_SHUTDOWN;
if (to_skip < 120) // prevents weird overflows on startup
to_skip++;
else {
check_timestamp(rcd);
rxbhfn(rcd);
}
return samples;
};
}
bladerf_stream_cb gettxcb(bh_fn_t txbh)
{
// C cb -> no capture!
static auto txbhfn = txbh;
return [](struct bladerf *dev, struct bladerf_stream *stream, struct bladerf_metadata *meta,
void *samples, size_t num_samples, void *user_data) -> void * {
struct blade_hw *trx = (struct blade_hw *)user_data;
auto ptr = reinterpret_cast<tx_buf_q_type::elem_t>(samples);
if (samples) // put buffer address back into queue, ready to be reused
trx->buf_mgmt.bufptrqueue.spsc_push(&ptr);
if (stop_me_flag)
return BLADERF_STREAM_SHUTDOWN;
return BLADERF_STREAM_NO_DATA;
};
}
auto get_rx_burst_handler_fn(bh_fn_t burst_handler)
{
auto fn = [this] {
int status;
status = bladerf_stream(rx_stream, BLADERF_RX_X1);
if (status < 0)
std::cerr << "rx stream error! " << bladerf_strerror(status) << std::endl;
return 0;
};
return fn;
}
auto get_tx_burst_handler_fn(bh_fn_t burst_handler)
{
auto fn = [this] {
int status;
status = bladerf_stream(tx_stream, BLADERF_TX_X1);
if (status < 0)
std::cerr << "rx stream error! " << bladerf_strerror(status) << std::endl;
return 0;
};
return fn;
}
void submit_burst_ts(blade_sample_type *buffer, int len, uint64_t ts)
{
//get empty bufer from list
tx_buf_q_type::elem_t rcd;
while (!buf_mgmt.bufptrqueue.spsc_pop(&rcd))
buf_mgmt.bufptrqueue.spsc_prep_pop();
assert(rcd != nullptr);
rcd->write_n_burst(buffer, len, ts + rxtxdelay); // blade xa4 specific delay!
blade_check(bladerf_submit_stream_buffer_nb, tx_stream, (void *)rcd);
}
};

194
Transceiver52M/ms/itrq.h
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@ -0,0 +1,194 @@
#pragma once
/*
* (C) 2022 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* Author: Eric Wild <ewild@sysmocom.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <atomic>
#include <condition_variable>
#include <mutex>
#include <sys/eventfd.h>
#include <unistd.h>
namespace spsc_detail
{
template <bool block_read, bool block_write> class spsc_cond_detail {
std::condition_variable cond_r, cond_w;
std::mutex lr, lw;
std::atomic_int r_flag, w_flag;
public:
explicit spsc_cond_detail() : r_flag(0), w_flag(0)
{
}
~spsc_cond_detail()
{
}
ssize_t spsc_check_r()
{
std::unique_lock<std::mutex> lk(lr);
while (r_flag == 0)
cond_r.wait(lk);
r_flag--;
return 1;
}
ssize_t spsc_check_w()
{
std::unique_lock<std::mutex> lk(lw);
while (w_flag == 0)
cond_w.wait(lk);
w_flag--;
return 1;
}
void spsc_notify_r()
{
std::unique_lock<std::mutex> lk(lr);
r_flag++;
cond_r.notify_one();
}
void spsc_notify_w()
{
std::unique_lock<std::mutex> lk(lw);
w_flag++;
cond_w.notify_one();
}
};
// originally designed for select loop integration
template <bool block_read, bool block_write> class spsc_efd_detail {
int efd_r, efd_w; /* eventfds used to block/notify readers/writers */
public:
explicit spsc_efd_detail()
: efd_r(eventfd(0, block_read ? 0 : EFD_NONBLOCK)), efd_w(eventfd(1, block_write ? 0 : EFD_NONBLOCK))
{
}
~spsc_efd_detail()
{
close(efd_r);
close(efd_w);
}
ssize_t spsc_check_r()
{
uint64_t efdr;
return read(efd_r, &efdr, sizeof(uint64_t));
}
ssize_t spsc_check_w()
{
uint64_t efdr;
return read(efd_w, &efdr, sizeof(uint64_t));
}
void spsc_notify_r()
{
uint64_t efdu = 1;
write(efd_r, &efdu, sizeof(uint64_t));
}
void spsc_notify_w()
{
uint64_t efdu = 1;
write(efd_w, &efdu, sizeof(uint64_t));
}
int get_r_efd()
{
return efd_r;
}
int get_w_efd()
{
return efd_w;
}
};
template <unsigned int SZ, typename ELEM, bool block_read, bool block_write, template <bool, bool> class T>
class spsc : public T<block_read, block_write> {
static_assert(SZ > 0, "queues need a size...");
std::atomic<unsigned int> readptr;
std::atomic<unsigned int> writeptr;
ELEM buf[SZ];
public:
using base_t = T<block_read, block_write>;
using elem_t = ELEM;
explicit spsc() : readptr(0), writeptr(0)
{
}
~spsc()
{
}
/*! Adds element to the queue by copying the data.
* \param[in] elem input buffer, must match the originally configured queue buffer size!.
* \returns true if queue was not full and element was successfully pushed */
bool spsc_push(const ELEM *elem)
{
size_t cur_wp, cur_rp;
cur_wp = writeptr.load(std::memory_order_relaxed);
cur_rp = readptr.load(std::memory_order_acquire);
if ((cur_wp + 1) % SZ == cur_rp) {
if (block_write)
base_t::spsc_check_w(); /* blocks, ensures next (!) call succeeds */
return false;
}
buf[cur_wp] = *elem;
writeptr.store((cur_wp + 1) % SZ, std::memory_order_release);
if (block_read)
base_t::spsc_notify_r(); /* fine after release */
return true;
}
/*! Removes element from the queue by copying the data.
* \param[in] elem output buffer, must match the originally configured queue buffer size!.
* \returns true if queue was not empty and element was successfully removed */
bool spsc_pop(ELEM *elem)
{
size_t cur_wp, cur_rp;
cur_wp = writeptr.load(std::memory_order_acquire);
cur_rp = readptr.load(std::memory_order_relaxed);
if (cur_wp == cur_rp) /* blocks via prep_pop */
return false;
*elem = buf[cur_rp];
readptr.store((cur_rp + 1) % SZ, std::memory_order_release);
if (block_write)
base_t::spsc_notify_w();
return true;
}
/*! Reads the read-fd of the queue, which, depending on settings passed on queue creation, blocks.
* This function can be used to deliberately wait for a non-empty queue on the read side.
* \returns result of reading the fd. */
ssize_t spsc_prep_pop()
{
return base_t::spsc_check_r();
}
};
} // namespace spsc_detail
template <unsigned int SZ, typename ELEM, bool block_read, bool block_write>
class spsc_evfd : public spsc_detail::spsc<SZ, ELEM, block_read, block_write, spsc_detail::spsc_efd_detail> {};
template <unsigned int SZ, typename ELEM, bool block_read, bool block_write>
class spsc_cond : public spsc_detail::spsc<SZ, ELEM, block_read, block_write, spsc_detail::spsc_cond_detail> {};

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Transceiver52M/ms/l1ctl_server.c
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/*
* OsmocomBB <-> SDR connection bridge
* UNIX socket server for L1CTL
*
* (C) 2013 by Sylvain Munaut <tnt@246tNt.com>
* (C) 2016-2017 by Vadim Yanitskiy <axilirator@gmail.com>
* (C) 2022 by by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <osmocom/core/talloc.h>
#include <osmocom/core/select.h>
#include <osmocom/core/socket.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/bb/trxcon/logging.h>
#include <osmocom/bb/trxcon/l1ctl_server.h>
#define LOGP_CLI(cli, cat, level, fmt, args...) LOGP(cat, level, "%s" fmt, (cli)->log_prefix, ##args)
static int l1ctl_client_read_cb(struct osmo_fd *ofd)
{
struct l1ctl_client *client = (struct l1ctl_client *)ofd->data;
struct msgb *msg;
uint16_t len;
int rc;
/* Attempt to read from socket */
rc = read(ofd->fd, &len, L1CTL_MSG_LEN_FIELD);
if (rc != L1CTL_MSG_LEN_FIELD) {
if (rc <= 0) {
LOGP_CLI(client, DL1D, LOGL_NOTICE, "L1CTL connection error: read() failed (rc=%d): %s\n", rc,
strerror(errno));
} else {
LOGP_CLI(client, DL1D, LOGL_NOTICE, "L1CTL connection error: short read\n");
rc = -EIO;
}
l1ctl_client_conn_close(client);
return rc;
}
/* Check message length */
len = ntohs(len);
if (len > L1CTL_LENGTH) {
LOGP_CLI(client, DL1D, LOGL_ERROR, "Length is too big: %u\n", len);
return -EINVAL;
}
/* Allocate a new msg */
msg = msgb_alloc_headroom(L1CTL_LENGTH + L1CTL_HEADROOM, L1CTL_HEADROOM, "l1ctl_rx_msg");
if (!msg) {
LOGP_CLI(client, DL1D, LOGL_ERROR, "Failed to allocate msg\n");
return -ENOMEM;
}
msg->l1h = msgb_put(msg, len);
rc = read(ofd->fd, msg->l1h, msgb_l1len(msg));
if (rc != len) {
LOGP_CLI(client, DL1D, LOGL_ERROR, "Can not read data: len=%d < rc=%d: %s\n", len, rc, strerror(errno));
msgb_free(msg);
return rc;
}
/* Debug print */
LOGP_CLI(client, DL1D, LOGL_DEBUG, "RX: '%s'\n", osmo_hexdump(msg->data, msg->len));
/* Call L1CTL handler */
client->server->cfg->conn_read_cb(client, msg);
return 0;
}
static int l1ctl_client_write_cb(struct osmo_fd *ofd, struct msgb *msg)
{
struct l1ctl_client *client = (struct l1ctl_client *)ofd->data;
int len;
if (ofd->fd <= 0)
return -EINVAL;
len = write(ofd->fd, msg->data, msg->len);
if (len != msg->len) {
LOGP_CLI(client, DL1D, LOGL_ERROR, "Failed to write data: written (%d) < msg_len (%d)\n", len,
msg->len);
return -1;
}
return 0;
}
/* Connection handler */
static int l1ctl_server_conn_cb(struct osmo_fd *sfd, unsigned int flags)
{
struct l1ctl_server *server = (struct l1ctl_server *)sfd->data;
struct l1ctl_client *client;
int rc, client_fd;
client_fd = accept(sfd->fd, NULL, NULL);
if (client_fd < 0) {
LOGP(DL1C, LOGL_ERROR,
"Failed to accept() a new connection: "
"%s\n",
strerror(errno));
return client_fd;
}
if (server->cfg->num_clients_max > 0 /* 0 means unlimited */ &&
server->num_clients >= server->cfg->num_clients_max) {
LOGP(DL1C, LOGL_NOTICE,
"L1CTL server cannot accept more "
"than %u connection(s)\n",
server->cfg->num_clients_max);
close(client_fd);
return -ENOMEM;
}
client = talloc_zero(server, struct l1ctl_client);
if (client == NULL) {
LOGP(DL1C, LOGL_ERROR, "Failed to allocate an L1CTL client\n");
close(client_fd);
return -ENOMEM;
}
/* Init the client's write queue */
osmo_wqueue_init(&client->wq, 100);
INIT_LLIST_HEAD(&client->wq.bfd.list);
client->wq.write_cb = &l1ctl_client_write_cb;
client->wq.read_cb = &l1ctl_client_read_cb;
osmo_fd_setup(&client->wq.bfd, client_fd, OSMO_FD_READ, &osmo_wqueue_bfd_cb, client, 0);
/* Register the client's write queue */
rc = osmo_fd_register(&client->wq.bfd);
if (rc != 0) {
LOGP(DL1C, LOGL_ERROR, "Failed to register a new connection fd\n");
close(client->wq.bfd.fd);
talloc_free(client);
return rc;
}
llist_add_tail(&client->list, &server->clients);
client->id = server->next_client_id++;
client->server = server;
server->num_clients++;
LOGP(DL1C, LOGL_NOTICE, "L1CTL server got a new connection (id=%u)\n", client->id);
if (client->server->cfg->conn_accept_cb != NULL)
client->server->cfg->conn_accept_cb(client);
return 0;
}
int l1ctl_client_send(struct l1ctl_client *client, struct msgb *msg)
{
uint8_t *len;
/* Debug print */
LOGP_CLI(client, DL1D, LOGL_DEBUG, "TX: '%s'\n", osmo_hexdump(msg->data, msg->len));
if (msg->l1h != msg->data)
LOGP_CLI(client, DL1D, LOGL_INFO, "Message L1 header != Message Data\n");
/* Prepend 16-bit length before sending */
len = msgb_push(msg, L1CTL_MSG_LEN_FIELD);
osmo_store16be(msg->len - L1CTL_MSG_LEN_FIELD, len);
if (osmo_wqueue_enqueue(&client->wq, msg) != 0) {
LOGP_CLI(client, DL1D, LOGL_ERROR, "Failed to enqueue msg!\n");
msgb_free(msg);
return -EIO;
}
return 0;
}
void l1ctl_client_conn_close(struct l1ctl_client *client)
{
struct l1ctl_server *server = client->server;
LOGP_CLI(client, DL1C, LOGL_NOTICE, "Closing L1CTL connection\n");
if (server->cfg->conn_close_cb != NULL)
server->cfg->conn_close_cb(client);
/* Close connection socket */
osmo_fd_unregister(&client->wq.bfd);
close(client->wq.bfd.fd);
client->wq.bfd.fd = -1;
/* Clear pending messages */
osmo_wqueue_clear(&client->wq);
client->server->num_clients--;
llist_del(&client->list);
talloc_free(client);
/* If this was the last client, reset the client IDs generator to 0.
* This way avoid assigning huge unreadable client IDs like 26545. */
if (llist_empty(&server->clients))
server->next_client_id = 0;
}
struct l1ctl_server *l1ctl_server_alloc(void *ctx, const struct l1ctl_server_cfg *cfg)
{
struct l1ctl_server *server;
int rc;
LOGP(DL1C, LOGL_NOTICE, "Init L1CTL server (sock_path=%s)\n", cfg->sock_path);
server = talloc(ctx, struct l1ctl_server);
OSMO_ASSERT(server != NULL);
*server = (struct l1ctl_server){
.clients = LLIST_HEAD_INIT(server->clients),
.cfg = cfg,
};
/* conn_read_cb shall not be NULL */
OSMO_ASSERT(cfg->conn_read_cb != NULL);
/* Bind connection handler */
osmo_fd_setup(&server->ofd, -1, OSMO_FD_READ, &l1ctl_server_conn_cb, server, 0);
rc = osmo_sock_unix_init_ofd(&server->ofd, SOCK_STREAM, 0, cfg->sock_path, OSMO_SOCK_F_BIND);
if (rc < 0) {
LOGP(DL1C, LOGL_ERROR, "Could not create UNIX socket: %s\n", strerror(errno));
talloc_free(server);
return NULL;
}
return server;
}
void l1ctl_server_free(struct l1ctl_server *server)
{
LOGP(DL1C, LOGL_NOTICE, "Shutdown L1CTL server\n");
/* Close all client connections */
while (!llist_empty(&server->clients)) {
struct l1ctl_client *client = llist_entry(server->clients.next, struct l1ctl_client, list);
l1ctl_client_conn_close(client);
}
/* Unbind listening socket */
if (server->ofd.fd != -1) {
osmo_fd_unregister(&server->ofd);
close(server->ofd.fd);
server->ofd.fd = -1;
}
talloc_free(server);
}

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/*
* (C) 2022 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* Author: Eric Wild <ewild@sysmocom.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
extern "C" {
#include <osmocom/bb/trxcon/trxcon.h>
#include <osmocom/bb/trxcon/trxcon_fsm.h>
#include <osmocom/bb/trxcon/l1ctl_server.h>
}
static struct l1ctl_server_cfg server_cfg;
static struct l1ctl_server *server = NULL;
namespace trxcon
{
extern struct trxcon_inst *g_trxcon;
}
static int l1ctl_rx_cb(struct l1ctl_client *l1c, struct msgb *msg)
{
struct trxcon_inst *trxcon = (struct trxcon_inst *)l1c->priv;
return trxcon_l1ctl_receive(trxcon, msg);
}
static void l1ctl_conn_accept_cb(struct l1ctl_client *l1c)
{
l1c->log_prefix = talloc_strdup(l1c, trxcon::g_trxcon->log_prefix);
l1c->priv = trxcon::g_trxcon;
trxcon::g_trxcon->l2if = l1c;
}
static void l1ctl_conn_close_cb(struct l1ctl_client *l1c)
{
struct trxcon_inst *trxcon = (struct trxcon_inst *)l1c->priv;
if (trxcon == NULL || trxcon->fi == NULL)
return;
osmo_fsm_inst_dispatch(trxcon->fi, TRXCON_EV_L2IF_FAILURE, NULL);
}
namespace trxcon
{
bool trxc_l1ctl_init(void *tallctx)
{
/* Start the L1CTL server */
server_cfg = (struct l1ctl_server_cfg){
/* TODO: make path configurable */
.sock_path = "/tmp/osmocom_l2",
.num_clients_max = 1,
.conn_read_cb = &l1ctl_rx_cb,
.conn_accept_cb = &l1ctl_conn_accept_cb,
.conn_close_cb = &l1ctl_conn_close_cb,
};
server = l1ctl_server_alloc(tallctx, &server_cfg);
if (server == NULL) {
return false;
}
return true;
}
} // namespace trxcon

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Transceiver52M/ms/logging.c
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/*
* (C) 2016-2022 by Vadim Yanitskiy <axilirator@gmail.com>
*
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <osmocom/core/application.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/utils.h>
#include <osmocom/bb/trxcon/logging.h>
#include <osmocom/bb/trxcon/trxcon.h>
static struct log_info_cat trxcon_log_info_cat[] = {
[DAPP] = {
.name = "DAPP",
.color = "\033[1;35m",
.description = "Application",
.loglevel = LOGL_NOTICE,
.enabled = 1,
},
[DL1C] = {
.name = "DL1C",
.color = "\033[1;31m",
.description = "Layer 1 control interface",
.loglevel = LOGL_NOTICE,
.enabled = 1,
},
[DL1D] = {
.name = "DL1D",
.color = "\033[1;31m",
.description = "Layer 1 data",
.loglevel = LOGL_NOTICE,
.enabled = 1,
},
[DSCH] = {
.name = "DSCH",
.color = "\033[1;36m",
.description = "Scheduler management",
.loglevel = LOGL_NOTICE,
.enabled = 0,
},
[DSCHD] = {
.name = "DSCHD",
.color = "\033[1;36m",
.description = "Scheduler data",
.loglevel = LOGL_NOTICE,
.enabled = 0,
},
};
static struct log_info trxcon_log_info = {
.cat = trxcon_log_info_cat,
.num_cat = ARRAY_SIZE(trxcon_log_info_cat),
};
static const int trxcon_log_cfg[] = {
[TRXCON_LOGC_FSM] = DAPP,
[TRXCON_LOGC_L1C] = DL1C,
[TRXCON_LOGC_L1D] = DL1D,
[TRXCON_LOGC_SCHC] = DSCH,
[TRXCON_LOGC_SCHD] = DSCHD,
};
void trxc_log_init(void *tallctx)
{
osmo_init_logging2(tallctx, &trxcon_log_info);
trxcon_set_log_cfg(&trxcon_log_cfg[0], ARRAY_SIZE(trxcon_log_cfg));
}

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/*
* (C) 2022 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
* All Rights Reserved
*
* Author: Eric Wild <ewild@sysmocom.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "GSMCommon.h"
#include <atomic>
#include <cassert>
#include <complex>
#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <thread>
#include <fstream>
#include "sigProcLib.h"
#include "ms.h"
#include "ms_rx_burst.h"
#include "grgsm_vitac/grgsm_vitac.h"
extern "C" {
#include "sch.h"
#include "convolve.h"
#include "convert.h"
}
dummylog ms_trx::dummy_log;
#ifdef DBGXX
const int offsetrange = 200;
const int offset_start = -15;
static int offset_ctr = 0;
#endif
template <> std::atomic<bool> ms_trx::base::stop_me_flag(false);
void tx_test(ms_trx *t, ts_hitter_q_t *q, unsigned int *tsc)
{
sched_param sch_params;
sch_params.sched_priority = sched_get_priority_max(SCHED_FIFO);
pthread_setschedparam(pthread_self(), SCHED_FIFO, &sch_params);
auto burst = genRandAccessBurst(0, 4, 0);
scaleVector(*burst, t->txFullScale * 0.7);
// float -> int16
blade_sample_type burst_buf[burst->size()];
convert_and_scale<int16_t, float>(burst_buf, burst->begin(), burst->size() * 2, 1);
while (1) {
GSM::Time target;
while (!q->spsc_pop(&target)) {
q->spsc_prep_pop();
}
std::cerr << std::endl << "\x1B[32m hitting " << target.FN() << "\033[0m" << std::endl;
int timing_advance = 0;
int64_t now_ts;
GSM::Time now_time;
target.incTN(3); // ul dl offset
int target_fn = target.FN();
int target_tn = target.TN();
t->timekeeper.get_both(&now_time, &now_ts);
auto diff_fn = GSM::FNDelta(target_fn, now_time.FN());
int diff_tn = (target_tn - (int)now_time.TN()) % 8;
auto tosend = GSM::Time(diff_fn, 0);
if (diff_tn > 0)
tosend.incTN(diff_tn);
else if (diff_tn < 0)
tosend.decTN(-diff_tn);
// in thory fn equal and tn+3 equal is also a problem...
if (diff_fn < 0 || (diff_fn == 0 && (now_time.TN() - target_tn < 1))) {
std::cerr << "## TX too late?! fn DIFF:" << diff_fn << " tn LOCAL: " << now_time.TN()
<< " tn OTHER: " << target_tn << std::endl;
return;
}
auto check = now_time + tosend;
int64_t send_ts =
now_ts + tosend.FN() * 8 * ONE_TS_BURST_LEN + tosend.TN() * ONE_TS_BURST_LEN - timing_advance;
#ifdef DBGXX
std::cerr << "## fn DIFF: " << diff_fn << " ## tn DIFF: " << diff_tn << " tn LOCAL: " << now_time.TN()
<< " tn OTHER: " << target_tn << " tndiff" << diff_tn << " tosend:" << tosend.FN() << ":"
<< tosend.TN() << " calc: " << check.FN() << ":" << check.TN() << " target: " << target.FN()
<< ":" << target.TN() << " ts now: " << now_ts << " target ts:" << send_ts << std::endl;
#endif
unsigned int pad = 4 * 25;
blade_sample_type buf2[burst->size() + pad];
std::fill(buf2, buf2 + pad, 0);
memcpy(&buf2[pad], burst_buf, burst->size() * sizeof(blade_sample_type));
assert(target.FN() == check.FN());
assert(target.TN() == check.TN());
assert(target.FN() % 51 == 21);
#ifdef DBGXX
auto this_offset = offset_start + (offset_ctr++ % offsetrange);
std::cerr << "-- O " << this_offset << std::endl;
send_ts = now_ts - timing_advance +
((target.FN() * 8 + (int)target.TN()) - (now_time.FN() * 8 + (int)now_time.TN())) *
ONE_TS_BURST_LEN;
#endif
t->submit_burst_ts(buf2, burst->size() + pad, send_ts - pad);
#ifdef DBGXX
signalVector test(burst->size() + pad);
convert_and_scale<float, int16_t>(test.begin(), buf2, burst->size() * 2 + pad, 1.f / float(scale));
estim_burst_params ebp;
auto det = detectAnyBurst(test, 0, 4, 4, CorrType::RACH, 40, &ebp);
if (det > 0)
std::cerr << "## Y " << ebp.toa << std::endl;
else
std::cerr << "## NOOOOOOOOO " << ebp.toa << std::endl;
#endif
}
}
#ifdef SYNCTHINGONLY
template <typename A> auto parsec(std::vector<std::string> &v, A &itr, std::string arg, bool *rv)
{
if (*itr == arg) {
*rv = true;
return true;
}
return false;
}
template <typename A, typename B, typename C>
bool parsec(std::vector<std::string> &v, A &itr, std::string arg, B f, C *rv)
{
if (*itr == arg) {
itr++;
if (itr != v.end()) {
*rv = f(itr->c_str());
return true;
}
}
return false;
}
template <typename A> bool parsec(std::vector<std::string> &v, A &itr, std::string arg, int scale, int *rv)
{
return parsec(
v, itr, arg, [scale](const char *v) -> auto{ return atoi(v) * scale; }, rv);
}
template <typename A> bool parsec(std::vector<std::string> &v, A &itr, std::string arg, int scale, unsigned int *rv)
{
return parsec(
v, itr, arg, [scale](const char *v) -> auto{ return atoi(v) * scale; }, rv);
}
int main(int argc, char *argv[])
{
cpu_set_t cpuset;
CPU_ZERO(&cpuset);
CPU_SET(2, &cpuset);
auto rv = pthread_setaffinity_np(pthread_self(), sizeof(cpuset), &cpuset);
if (rv < 0) {
std::cerr << "affinity: errreur! " << std::strerror(errno);
return 0;