From 49f178ed94b5fad00d25dbd12adea0bf4732f803 Mon Sep 17 00:00:00 2001 From: gatecat Date: Fri, 8 Apr 2022 13:42:54 +0100 Subject: Split up common into kernel,place,route Signed-off-by: gatecat --- common/kernel/str_ring_buffer.h | 45 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 common/kernel/str_ring_buffer.h (limited to 'common/kernel/str_ring_buffer.h') diff --git a/common/kernel/str_ring_buffer.h b/common/kernel/str_ring_buffer.h new file mode 100644 index 00000000..42583beb --- /dev/null +++ b/common/kernel/str_ring_buffer.h @@ -0,0 +1,45 @@ +/* + * nextpnr -- Next Generation Place and Route + * + * Copyright (C) 2018 Claire Xenia Wolf + * Copyright (C) 2018 Serge Bazanski + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ +#ifndef STR_RING_BUFFER_H +#define STR_RING_BUFFER_H + +#include +#include + +#include "nextpnr_namespaces.h" + +NEXTPNR_NAMESPACE_BEGIN + +// A ring buffer of strings, so we can return a simple const char * pointer for %s formatting - inspired by how logging +// in Yosys works Let's just hope noone tries to log more than 100 things in one call.... +class StrRingBuffer +{ + private: + static const size_t N = 100; + std::array buffer; + size_t index = 0; + + public: + std::string &next(); +}; + +NEXTPNR_NAMESPACE_END + +#endif /* STR_RING_BUFFER_H */ -- cgit v1.2.3