Add debugging functions.

1 files changed, 202 insertions, 0 deletions

diff --git a/c/debug.cpp b/c/debug.cpp
new file mode 100644
index 0000000..e22234a
--- /dev/null
+++ b/c/debug.cpp
@@ -0,0 +1,202 @@
+#include <cstddef>
+#include <windows.h>
+
+#include "common.h"
+#include "debug.h"
+
+struct Avg {
+	int id;
+	int count;
+	long long sum;
+};
+
+static long long llFrequency;
+
+Benchmark::Benchmark(const char* const szName, const int iId, const int iAvgMax)
+	: id(iId), avgmax(iAvgMax), name(szName)
+{
+	if (!llFrequency) {
+		static LARGE_INTEGER liFrequency;
+		if (!QueryPerformanceFrequency(&liFrequency))
+			throw Win32Error();
+		llFrequency = liFrequency.QuadPart;
+	}
+
+	LARGE_INTEGER liTicks;
+	if (!QueryPerformanceCounter(&liTicks))
+		throw Win32Error();
+	ticks = liTicks.QuadPart;
+}
+
+void Benchmark::Disable()
+{
+	disabled = true;
+}
+
+Benchmark::~Benchmark()
+{
+	if (disabled)
+		return;
+
+	LARGE_INTEGER liTicks;
+	if (!QueryPerformanceCounter(&liTicks))
+		return;
+
+	long long ll = liTicks.QuadPart-ticks;
+	ll *= 1'000'000;
+	ll /= llFrequency;
+
+	static Avg aAvg[256] = {0};
+	for (size_t i = 0; i < sizeof(aAvg)/sizeof(*aAvg); i++) {
+		Avg& avg = aAvg[i];
+		if (avg.id == id || !avg.id) {
+			avg.id = id;
+			if (avg.count < avgmax) {
+				avg.count++;
+				avg.sum += ll;
+			} else {
+				avg.count = 1;
+				avg.sum = ll;
+			}
+			printf("%s: %lld (%lld)\n",
+			    name, ll, avg.sum/avg.count);
+			break;
+		}
+	}
+}
+
+const char* SzFromUmsg(const unsigned uMsg)
+{
+	static const unsigned aKeyMsg[] = {
+		0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18,
+		19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34,
+		35, 36, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
+		55, 57, 61, 65, 68, 70, 71, 72, 73, 74, 75, 78, 80, 81, 82,
+		83, 84, 85, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132,
+		133, 134, 135, 136, 160, 161, 162, 163, 164, 165, 166, 167,
+		168, 169, 171, 172, 173, 176, 177, 178, 179, 180, 181, 182,
+		183, 185, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196,
+		197, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207,
+		209, 209, 210, 211, 212, 213, 214, 215, 216, 217, 224, 225,
+		226, 227, 228, 230, 233, 234, 235, 240, 241, 242, 243, 244,
+		245, 246, 247, 248, 255, 256, 256, 257, 258, 259, 260, 261,
+		262, 263, 264, 265, 265, 266, 267, 268, 269, 270, 271, 271,
+		272, 273, 274, 275, 276, 277, 278, 279, 280, 287, 288, 289,
+		290, 291, 292, 293, 294, 295, 296, 297, 306, 307, 308, 309,
+		310, 311, 312, 512, 512, 513, 514, 515, 516, 517, 518, 519,
+		520, 521, 521, 522, 523, 524, 525, 528, 529, 530, 531, 532,
+		533, 534, 536, 537, 544, 545, 546, 547, 548, 549, 550, 551,
+		552, 553, 560, 561, 562, 563, 564, 640, 641, 642, 643, 644,
+		645, 646, 648, 656, 656, 657, 657, 672, 673, 674, 675, 768,
+		769, 770, 771, 772, 773, 774, 775, 776, 777, 778, 779, 780,
+		781, 782, 783, 784, 785, 786, 791, 792, 793, 856, 863, 864,
+		895, 896, 897, 898, 899, 899, 900, 901, 901, 902, 903, 904,
+		911, 1024
+	};
+
+	static const char* const aValueMsg[] = {
+		"WM_NUL", "WM_CREATE", "WM_DESTROY", "WM_MOVE", "WM_SIZE",
+		"WM_ACTIVATE", "WM_SETFOCUS", "WM_KILLFOCUS", "WM_ENABLE",
+		"WM_SETREDRAW", "WM_SETTEXT", "WM_GETTEXT",
+		"WM_GETTEXTLENGTH", "WM_PAINT", "WM_CLOSE",
+		"WM_QUERYENDSESSION", "WM_QUIT", "WM_QUERYOPEN",
+		"WM_ERASEBKGND", "WM_SYSCOLORCHANGE", "WM_ENDSESSION",
+		"WM_SHOWWINDOW", "WM_CTLCOLOR", "WM_WININICHANGE",
+		"WM_DEVMODECHANGE", "WM_ACTIVATEAPP", "WM_FONTCHANGE",
+		"WM_TIMECHANGE", "WM_CANCELMODE", "WM_SETCURSOR",
+		"WM_MOUSEACTIVATE", "WM_CHILDACTIVATE", "WM_QUEUESYNC",
+		"WM_GETMINMAXINFO", "WM_PAINTICON", "WM_ICONERASEBKGND",
+		"WM_NEXTDLGCT", "WM_SPOOLERSTATUS", "WM_DRAWITEM",
+		"WM_MEASUREITEM", "WM_DELETEITEM", "WM_VKEYTOITEM",
+		"WM_CHARTOITEM", "WM_SETFONT", "WM_GETFONT", "WM_SETHOTKEY",
+		"WM_GETHOTKEY", "WM_QUERYDRAGICON", "WM_COMPAREITEM",
+		"WM_GETOBJECT", "WM_COMPACTING", "WM_COMMNOTIFY",
+		"WM_WINDOWPOSCHANGING", "WM_WINDOWPOSCHANGED", "WM_POWER",
+		"WM_COPYGLOBALDATA", "WM_COPYDATA", "WM_CANCELJOURNA",
+		"WM_NOTIFY", "WM_INPUTLANGCHANGEREQUEST",
+		"WM_INPUTLANGCHANGE", "WM_TCARD", "WM_HELP", "WM_USERCHANGED",
+		"WM_NOTIFYFORMAT", "WM_CONTEXTMENU", "WM_STYLECHANGING",
+		"WM_STYLECHANGED", "WM_DISPLAYCHANGE", "WM_GETICON",
+		"WM_SETICON", "WM_NCCREATE", "WM_NCDESTROY", "WM_NCCALCSIZE",
+		"WM_NCHITTEST", "WM_NCPAINT", "WM_NCACTIVATE",
+		"WM_GETDLGCODE", "WM_SYNCPAINT", "WM_NCMOUSEMOVE",
+		"WM_NCLBUTTONDOWN", "WM_NCLBUTTONUP", "WM_NCLBUTTONDBLCLK",
+		"WM_NCRBUTTONDOWN", "WM_NCRBUTTONUP", "WM_NCRBUTTONDBLCLK",
+		"WM_NCMBUTTONDOWN", "WM_NCMBUTTONUP", "WM_NCMBUTTONDBLCLK",
+		"WM_NCXBUTTONDOWN", "WM_NCXBUTTONUP", "WM_NCXBUTTONDBLCLK",
+		"EM_GETSE", "EM_SETSE", "EM_GETRECT", "EM_SETRECT",
+		"EM_SETRECTNP", "EM_SCROL", "EM_LINESCROL", "EM_SCROLLCARET",
+		"EM_GETMODIFY", "EM_SETMODIFY", "EM_GETLINECOUNT",
+		"EM_LINEINDEX", "EM_SETHANDLE", "EM_GETHANDLE", "EM_GETTHUMB",
+		"EM_LINELENGTH", "EM_REPLACESE", "EM_SETFONT", "EM_GETLINE",
+		"EM_LIMITTEXT", "EM_SETLIMITTEXT", "EM_CANUNDO", "EM_UNDO",
+		"EM_FMTLINES", "EM_LINEFROMCHAR", "EM_SETWORDBREAK",
+		"EM_SETTABSTOPS", "EM_SETPASSWORDCHAR", "EM_EMPTYUNDOBUFFER",
+		"EM_GETFIRSTVISIBLELINE", "EM_SETREADONLY",
+		"EM_SETWORDBREAKPROC", "EM_GETWORDBREAKPROC",
+		"EM_GETPASSWORDCHAR", "EM_SETMARGINS", "EM_GETMARGINS",
+		"EM_GETLIMITTEXT", "EM_POSFROMCHAR", "EM_CHARFROMPOS",
+		"EM_SETIMESTATUS", "EM_GETIMESTATUS", "SBM_SETPOS",
+		"SBM_GETPOS", "SBM_SETRANGE", "SBM_GETRANGE",
+		"SBM_ENABLE_ARROWS", "SBM_SETRANGEREDRAW",
+		"SBM_SETSCROLLINFO", "SBM_GETSCROLLINFO",
+		"SBM_GETSCROLLBARINFO", "BM_GETCHECK", "BM_SETCHECK",
+		"BM_GETSTATE", "BM_SETSTATE", "BM_SETSTYLE", "BM_CLICK",
+		"BM_GETIMAGE", "BM_SETIMAGE", "BM_SETDONTCLICK", "WM_INPUT",
+		"WM_KEYDOWN", "WM_KEYFIRST", "WM_KEYUP", "WM_CHAR",
+		"WM_DEADCHAR", "WM_SYSKEYDOWN", "WM_SYSKEYUP", "WM_SYSCHAR",
+		"WM_SYSDEADCHAR", "WM_KEYLAST", "WM_UNICHAR",
+		"WM_WNT_CONVERTREQUESTEX", "WM_CONVERTREQUEST",
+		"WM_CONVERTRESULT", "WM_INTERIM", "WM_IME_STARTCOMPOSITION",
+		"WM_IME_ENDCOMPOSITION", "WM_IME_COMPOSITION",
+		"WM_IME_KEYLAST", "WM_INITDIALOG", "WM_COMMAND",
+		"WM_SYSCOMMAND", "WM_TIMER", "WM_HSCROL", "WM_VSCROL",
+		"WM_INITMENU", "WM_INITMENUPOPUP", "WM_SYSTIMER",
+		"WM_MENUSELECT", "WM_MENUCHAR", "WM_ENTERIDLE",
+		"WM_MENURBUTTONUP", "WM_MENUDRAG", "WM_MENUGETOBJECT",
+		"WM_UNINITMENUPOPUP", "WM_MENUCOMMAND", "WM_CHANGEUISTATE",
+		"WM_UPDATEUISTATE", "WM_QUERYUISTATE", "WM_CTLCOLORMSGBOX",
+		"WM_CTLCOLOREDIT", "WM_CTLCOLORLISTBOX", "WM_CTLCOLORBTN",
+		"WM_CTLCOLORDLG", "WM_CTLCOLORSCROLLBAR", "WM_CTLCOLORSTATIC",
+		"WM_MOUSEFIRST", "WM_MOUSEMOVE", "WM_LBUTTONDOWN",
+		"WM_LBUTTONUP", "WM_LBUTTONDBLCLK", "WM_RBUTTONDOWN",
+		"WM_RBUTTONUP", "WM_RBUTTONDBLCLK", "WM_MBUTTONDOWN",
+		"WM_MBUTTONUP", "WM_MBUTTONDBLCLK", "WM_MOUSELAST",
+		"WM_MOUSEWHEE", "WM_XBUTTONDOWN", "WM_XBUTTONUP",
+		"WM_XBUTTONDBLCLK", "WM_PARENTNOTIFY", "WM_ENTERMENULOOP",
+		"WM_EXITMENULOOP", "WM_NEXTMENU", "WM_SIZING",
+		"WM_CAPTURECHANGED", "WM_MOVING", "WM_POWERBROADCAST",
+		"WM_DEVICECHANGE", "WM_MDICREATE", "WM_MDIDESTROY",
+		"WM_MDIACTIVATE", "WM_MDIRESTORE", "WM_MDINEXT",
+		"WM_MDIMAXIMIZE", "WM_MDITILE", "WM_MDICASCADE",
+		"WM_MDIICONARRANGE", "WM_MDIGETACTIVE", "WM_MDISETMENU",
+		"WM_ENTERSIZEMOVE", "WM_EXITSIZEMOVE", "WM_DROPFILES",
+		"WM_MDIREFRESHMENU", "WM_IME_REPORT", "WM_IME_SETCONTEXT",
+		"WM_IME_NOTIFY", "WM_IME_CONTRO", "WM_IME_COMPOSITIONFUL",
+		"WM_IME_SELECT", "WM_IME_CHAR", "WM_IME_REQUEST",
+		"WM_IMEKEYDOWN", "WM_IME_KEYDOWN", "WM_IMEKEYUP",
+		"WM_IME_KEYUP", "WM_NCMOUSEHOVER", "WM_MOUSEHOVER",
+		"WM_NCMOUSELEAVE", "WM_MOUSELEAVE", "WM_CUT", "WM_COPY",
+		"WM_PASTE", "WM_CLEAR", "WM_UNDO", "WM_RENDERFORMAT",
+		"WM_RENDERALLFORMATS", "WM_DESTROYCLIPBOARD",
+		"WM_DRAWCLIPBOARD", "WM_PAINTCLIPBOARD",
+		"WM_VSCROLLCLIPBOARD", "WM_SIZECLIPBOARD",
+		"WM_ASKCBFORMATNAME", "WM_CHANGECBCHAIN",
+		"WM_HSCROLLCLIPBOARD", "WM_QUERYNEWPALETTE",
+		"WM_PALETTEISCHANGING", "WM_PALETTECHANGED", "WM_HOTKEY",
+		"WM_PRINT", "WM_PRINTCLIENT", "WM_APPCOMMAND",
+		"WM_HANDHELDFIRST", "WM_HANDHELDLAST", "WM_AFXFIRST",
+		"WM_AFXLAST", "WM_PENWINFIRST", "WM_RCRESULT",
+		"WM_HOOKRCRESULT", "WM_GLOBALRCCHANGE", "WM_PENMISCINFO",
+		"WM_SKB", "WM_HEDITCT", "WM_PENCT", "WM_PENMISC",
+		"WM_CTLINIT", "WM_PENEVENT", "WM_PENWINLAST", "WM_USER"
+	};
+
+	static const char* const szUnknown = "unknown message";
+
+	for (size_t i = 0; i < sizeof(aKeyMsg)/sizeof(*aKeyMsg); i++)
+		if (aKeyMsg[i] == uMsg) {
+			return aValueMsg[i];
+		}
+	return szUnknown;
+}