Merge bitcoin/bitcoin#26619: log: expand BCLog::LogFlags (categories) to 64 bits

b31a0cd log: expand BCLog::LogFlags (categories) to 64 bits (Larry Ruane)

Pull request description:

  Increase the maximum number of logging categories from 32 to 64.

  We're currently using 29 of the 32 available logging categories (there are only 3 remaining). It would be good to increase the limit soon; the fourth PR to be merged that adds a new logging category will be blocked until something like this is done.

  This PR also adds a `TEST` category that uses the new range (`1ULL << 63`) in case there's a hidden assumption somewhere that the `BCLog::LogFlags` type is 32 bits. (Also added a test for this test category.) It also provides an example showing that the expression must be `1ULL << <shift>` for shift value 31 and beyond.

ACKs for top commit:
  achow101:
    ACK b31a0cd
  vasild:
    ACK b31a0cd
  ryanofsky:
    Code review ACK b31a0cd, just dropping mask_bit constant since last review. I still think
  theStack:
    Code-review ACK b31a0cd

Tree-SHA512: de422dbeb479848d370aed42d415f42461457ab0eda62b245dc7ff9f0e111626e7d4c0d62ff13082ec664d05fbb0db04c71eb4b6f22eb8f19198826a67c4035e

Author: achow101

src/interfaces/node.h

@@ -7,6 +7,7 @@
 
 #include <common/settings.h>
 #include <consensus/amount.h>          // For CAmount
+#include <logging.h>                   // For BCLog::CategoryMask
 #include <net.h>                       // For NodeId
 #include <net_types.h>                 // For banmap_t
 #include <netaddress.h>                // For Network
@@ -84,7 +85,7 @@ class Node
     virtual int getExitStatus() = 0;
 
     // Get log flags.
-    virtual uint32_t getLogCategories() = 0;
+    virtual BCLog::CategoryMask getLogCategories() = 0;
 
     //! Initialize app dependencies.
     virtual bool baseInitialize() = 0;

src/logging.h

@@ -37,40 +37,41 @@ struct LogCategory {
 };
 
 namespace BCLog {
-    enum LogFlags : uint32_t {
-        NONE        = 0,
-        NET         = (1 <<  0),
-        TOR         = (1 <<  1),
-        MEMPOOL     = (1 <<  2),
-        HTTP        = (1 <<  3),
-        BENCH       = (1 <<  4),
-        ZMQ         = (1 <<  5),
-        WALLETDB    = (1 <<  6),
-        RPC         = (1 <<  7),
-        ESTIMATEFEE = (1 <<  8),
-        ADDRMAN     = (1 <<  9),
-        SELECTCOINS = (1 << 10),
-        REINDEX     = (1 << 11),
-        CMPCTBLOCK  = (1 << 12),
-        RAND        = (1 << 13),
-        PRUNE       = (1 << 14),
-        PROXY       = (1 << 15),
-        MEMPOOLREJ  = (1 << 16),
-        LIBEVENT    = (1 << 17),
-        COINDB      = (1 << 18),
-        QT          = (1 << 19),
-        LEVELDB     = (1 << 20),
-        VALIDATION  = (1 << 21),
-        I2P         = (1 << 22),
-        IPC         = (1 << 23),
+    using CategoryMask = uint64_t;
+    enum LogFlags : CategoryMask {
+        NONE        = CategoryMask{0},
+        NET         = (CategoryMask{1} <<  0),
+        TOR         = (CategoryMask{1} <<  1),
+        MEMPOOL     = (CategoryMask{1} <<  2),
+        HTTP        = (CategoryMask{1} <<  3),
+        BENCH       = (CategoryMask{1} <<  4),
+        ZMQ         = (CategoryMask{1} <<  5),
+        WALLETDB    = (CategoryMask{1} <<  6),
+        RPC         = (CategoryMask{1} <<  7),
+        ESTIMATEFEE = (CategoryMask{1} <<  8),
+        ADDRMAN     = (CategoryMask{1} <<  9),
+        SELECTCOINS = (CategoryMask{1} << 10),
+        REINDEX     = (CategoryMask{1} << 11),
+        CMPCTBLOCK  = (CategoryMask{1} << 12),
+        RAND        = (CategoryMask{1} << 13),
+        PRUNE       = (CategoryMask{1} << 14),
+        PROXY       = (CategoryMask{1} << 15),
+        MEMPOOLREJ  = (CategoryMask{1} << 16),
+        LIBEVENT    = (CategoryMask{1} << 17),
+        COINDB      = (CategoryMask{1} << 18),
+        QT          = (CategoryMask{1} << 19),
+        LEVELDB     = (CategoryMask{1} << 20),
+        VALIDATION  = (CategoryMask{1} << 21),
+        I2P         = (CategoryMask{1} << 22),
+        IPC         = (CategoryMask{1} << 23),
 #ifdef DEBUG_LOCKCONTENTION
-        LOCK        = (1 << 24),
+        LOCK        = (CategoryMask{1} << 24),
 #endif
-        BLOCKSTORAGE = (1 << 25),
-        TXRECONCILIATION = (1 << 26),
-        SCAN        = (1 << 27),
-        TXPACKAGES  = (1 << 28),
-        ALL         = ~(uint32_t)0,
+        BLOCKSTORAGE = (CategoryMask{1} << 25),
+        TXRECONCILIATION = (CategoryMask{1} << 26),
+        SCAN        = (CategoryMask{1} << 27),
+        TXPACKAGES  = (CategoryMask{1} << 28),
+        ALL         = ~NONE,
     };
     enum class Level {
         Trace = 0, // High-volume or detailed logging for development/debugging
@@ -119,7 +120,7 @@ namespace BCLog {
         std::atomic<Level> m_log_level{DEFAULT_LOG_LEVEL};
 
         /** Log categories bitfield. */
-        std::atomic<uint32_t> m_categories{BCLog::NONE};
+        std::atomic<CategoryMask> m_categories{BCLog::NONE};
 
         void FormatLogStrInPlace(std::string& str, LogFlags category, Level level, std::string_view source_file, int source_line, std::string_view logging_function, std::string_view threadname, SystemClock::time_point now, std::chrono::seconds mocktime) const;
 
@@ -204,7 +205,7 @@ namespace BCLog {
         void SetLogLevel(Level level) { m_log_level = level; }
         bool SetLogLevel(std::string_view level);
 
-        uint32_t GetCategoryMask() const { return m_categories.load(); }
+        CategoryMask GetCategoryMask() const { return m_categories.load(); }
 
         void EnableCategory(LogFlags flag);
         bool EnableCategory(std::string_view str);

src/node/interfaces.cpp

@@ -100,7 +100,7 @@ class NodeImpl : public Node
     void initParameterInteraction() override { InitParameterInteraction(args()); }
     bilingual_str getWarnings() override { return Join(Assert(m_context->warnings)->GetMessages(), Untranslated("<hr />")); }
     int getExitStatus() override { return Assert(m_context)->exit_status.load(); }
-    uint32_t getLogCategories() override { return LogInstance().GetCategoryMask(); }
+    BCLog::CategoryMask getLogCategories() override { return LogInstance().GetCategoryMask(); }
     bool baseInitialize() override
     {
         if (!AppInitBasicSetup(args(), Assert(context())->exit_status)) return false;

src/rpc/node.cpp

@@ -244,15 +244,15 @@ static RPCHelpMan logging()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    uint32_t original_log_categories = LogInstance().GetCategoryMask();
+    BCLog::CategoryMask original_log_categories = LogInstance().GetCategoryMask();
     if (request.params[0].isArray()) {
         EnableOrDisableLogCategories(request.params[0], true);
     }
     if (request.params[1].isArray()) {
         EnableOrDisableLogCategories(request.params[1], false);
     }
-    uint32_t updated_log_categories = LogInstance().GetCategoryMask();
-    uint32_t changed_log_categories = original_log_categories ^ updated_log_categories;
+    BCLog::CategoryMask updated_log_categories = LogInstance().GetCategoryMask();
+    BCLog::CategoryMask changed_log_categories = original_log_categories ^ updated_log_categories;
 
     // Update libevent logging if BCLog::LIBEVENT has changed.
     if (changed_log_categories & BCLog::LIBEVENT) {