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https://gitea.wildfiregames.com/0ad/0ad.git
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janwas
c0ed950657
this snowballed into a massive search+destroy of the hodgepodge of mostly equivalent types we had in use (int, uint, unsigned, unsigned int, i32, u32, ulong, uintN). it is more efficient to use 64-bit types in 64-bit mode, so the preferred default is size_t (for anything remotely resembling a size or index). tile coordinates are ssize_t to allow more efficient conversion to/from floating point. flags are int because we almost never need more than 15 distinct bits, bit test/set is not slower and int is fastest to type. finally, some data that is pretty much directly passed to OpenGL is now typed accordingly. after several hours, the code now requires fewer casts and less guesswork. other changes: - unit and player IDs now have an "invalid id" constant in the respective class to avoid casting and -1 - fix some endian/64-bit bugs in the map (un)packing. added a convenience function to write/read a size_t. - ia32: change CPUID interface to allow passing in ecx (required for cache topology detection, which I need at work). remove some unneeded functions from asm, replace with intrinsics where possible. This was SVN commit r5942.
113 lines
2.5 KiB
C++
113 lines
2.5 KiB
C++
/* udbg.cpp
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This file contains debug helpers that are common for all unix systems. See
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linux/ldbg.cpp for the linux-specific stuff (Using BFD and backtrace() for
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symbol lookups and backtraces)
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*/
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#include "precompiled.h"
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#include "lib/timer.h"
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#include "lib/sysdep/sysdep.h"
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#include "lib/debug.h"
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// udbg stubs.
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// (Linux has a better implementation using BFD)
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void* udbg_get_nth_caller(size_t UNUSED(n), void *UNUSED(context))
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{
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return NULL;
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}
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LibError udbg_dump_stack(wchar_t* UNUSED(buf), size_t UNUSED(max_chars), size_t UNUSED(skip), void* UNUSED(context))
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{
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return ERR::NOT_IMPLEMENTED;
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}
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LibError udbg_resolve_symbol(void* UNUSED(ptr_of_interest), char* UNUSED(sym_name), char* UNUSED(file), int* UNUSED(line))
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{
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return ERR::NOT_IMPLEMENTED;
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}
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void debug_break()
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{
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kill(getpid(), SIGTRAP);
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}
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#define DEBUGGER_WAIT 3
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#define DEBUGGER_CMD "gdb"
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#define DEBUGGER_ARG_FORMAT "--pid=%d"
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#define DEBUGGER_BREAK_AFTER_WAIT 0
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/*
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Start the debugger and tell it to attach to the current process/thread
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(called by display_error)
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*/
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void udbg_launch_debugger()
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{
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pid_t orgpid=getpid();
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pid_t ret=fork();
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if (ret == 0)
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{
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// Child Process: exec() gdb (Debugger), set to attach to old fork
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char buf[16];
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snprintf(buf, 16, DEBUGGER_ARG_FORMAT, orgpid);
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int ret=execlp(DEBUGGER_CMD, DEBUGGER_CMD, buf, NULL);
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// In case of success, we should never get here anyway, though...
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if (ret != 0)
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{
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perror("Debugger launch failed");
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}
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}
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else if (ret > 0)
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{
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// Parent (original) fork:
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debug_printf("Sleeping until debugger attaches.\nPlease wait.\n");
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sleep(DEBUGGER_WAIT);
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}
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else // fork error, ret == -1
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{
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perror("Debugger launch: fork failed");
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}
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}
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void debug_puts(const char* text)
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{
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fputs(text, stdout);
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fflush(stdout);
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}
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// TODO: Do these properly. (I don't know what I'm doing; I just
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// know that these functions are required in order to compile...)
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int debug_write_crashlog(const char* UNUSED(file), wchar_t* UNUSED(header),
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void* UNUSED(context))
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{
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abort();
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}
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int debug_is_pointer_bogus(const void* UNUSED(p))
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{
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return false;
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}
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void debug_heap_check()
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{
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}
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// if <full_monty> is true or PARANOIA #defined, all possible checks are
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// performed as often as possible. this is really slow (we are talking x100),
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// but reports errors closer to where they occurred.
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void debug_heap_enable(int UNUSED(heapChecks))
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{
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// No-op until we find out if glibc has heap debugging
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}
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// disable all automatic checks until the next debug_heap_enable.
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void debug_heap_disable()
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{
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// No-op until we find out if glibc has heap debugging
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}
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