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only use first 255 characters of source location

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When a Lua script was loaded through loadstring, dbg.source is the whole
source code; this not only causes a lot of unnecessary data to be sent,
it can even crash Tracy if the source string is larger than 64 KB.

Therefore, use the short version which is never more than 255 characters.
This commit is contained in:
Dennis Brakhane 2024-08-09 20:58:47 +02:00
parent a51f0d0657
commit 81d7e9d765
1 changed files with 19 additions and 4 deletions
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23
public/tracy/TracyLua.hpp
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@ -188,6 +188,13 @@ static tracy_force_inline void SendLuaCallstack( lua_State* L, uint32_t depth )
TracyQueueCommit( callstackAllocFatThread );
}
static inline void LuaShortenSrc( char* dst, const char* src )
{
size_t l = std::min( (size_t)255, strlen( src ) );
memcpy( dst, src, l );
dst[l] = 0;
}
static inline int LuaZoneBeginS( lua_State* L )
{
#ifdef TRACY_ON_DEMAND
@ -207,7 +214,9 @@ static inline int LuaZoneBeginS( lua_State* L )
lua_Debug dbg;
lua_getstack( L, 1, &dbg );
lua_getinfo( L, "Snl", &dbg );
const auto srcloc = Profiler::AllocSourceLocation( dbg.currentline, dbg.source, dbg.name ? dbg.name : dbg.short_src );
char src[256];
LuaShortenSrc( src, dbg.source );
const auto srcloc = Profiler::AllocSourceLocation( dbg.currentline, src, dbg.name ? dbg.name : dbg.short_src );
TracyQueuePrepare( QueueType::ZoneBeginAllocSrcLocCallstack );
MemWrite( &item->zoneBegin.time, Profiler::GetTime() );
@ -237,8 +246,10 @@ static inline int LuaZoneBeginNS( lua_State* L )
lua_getstack( L, 1, &dbg );
lua_getinfo( L, "Snl", &dbg );
size_t nsz;
char src[256];
LuaShortenSrc( src, dbg.source );
const auto name = lua_tolstring( L, 1, &nsz );
const auto srcloc = Profiler::AllocSourceLocation( dbg.currentline, dbg.source, dbg.name ? dbg.name : dbg.short_src, name, nsz );
const auto srcloc = Profiler::AllocSourceLocation( dbg.currentline, src, dbg.name ? dbg.name : dbg.short_src, name, nsz );
TracyQueuePrepare( QueueType::ZoneBeginAllocSrcLocCallstack );
MemWrite( &item->zoneBegin.time, Profiler::GetTime() );
@ -264,7 +275,9 @@ static inline int LuaZoneBegin( lua_State* L )
lua_Debug dbg;
lua_getstack( L, 1, &dbg );
lua_getinfo( L, "Snl", &dbg );
const auto srcloc = Profiler::AllocSourceLocation( dbg.currentline, dbg.source, dbg.name ? dbg.name : dbg.short_src );
char src[256];
LuaShortenSrc( src, dbg.source );
const auto srcloc = Profiler::AllocSourceLocation( dbg.currentline, src, dbg.name ? dbg.name : dbg.short_src );
TracyQueuePrepare( QueueType::ZoneBeginAllocSrcLoc );
MemWrite( &item->zoneBegin.time, Profiler::GetTime() );
@ -290,8 +303,10 @@ static inline int LuaZoneBeginN( lua_State* L )
lua_getstack( L, 1, &dbg );
lua_getinfo( L, "Snl", &dbg );
size_t nsz;
char src[256];
LuaShortenSrc( src, dbg.source );
const auto name = lua_tolstring( L, 1, &nsz );
const auto srcloc = Profiler::AllocSourceLocation( dbg.currentline, dbg.source, dbg.name ? dbg.name : dbg.short_src, name, nsz );
const auto srcloc = Profiler::AllocSourceLocation( dbg.currentline, src, dbg.name ? dbg.name : dbg.short_src, name, nsz );
TracyQueuePrepare( QueueType::ZoneBeginAllocSrcLoc );
MemWrite( &item->zoneBegin.time, Profiler::GetTime() );