invert features from no-verify -> verify

FEATURES.mkd

@@ -34,7 +34,12 @@
 * `demangle` - requires that the demangling function be defined by the user.
   See the `register_demangler!` macro for more details.
   Corresponds to the `TRACY_DEMANGLE` define.
-* `no-verify` - disables verification that spans are closed within Tracy's C API. Enabling this significantly reduces the relative overhead and timing precision of short lived spans (<100ns) - but can cause undefined behavior if spans are not closed, when using the Rust API this would likely correspond to calling a `std::mem::forget(span)`. Corresponds to the `TRACY_NO_VERIFY` define. 
+* `verify` - enables verification that spans are closed within Tracy's C API. Disabling this
+  reduces instrumentation overhead (~50% for 0 callstack depth spans) and improves timing precision
+  by a proportional amount. This is most noticeable in short lived spans (<100ns) but can cause
+  undefined behavior if spans are not closed. When using the provided Rust APIs this can occur if a
+  Span's drop code is not called (e.g. `std::mem::forget(span)`). When disabled
+  corresponds to the `TRACY_NO_VERIFY` define.
 
 Refer to this package's `Cargo.toml` for the list of the features enabled by default. Refer to
 the `Tracy` manual for more information on the implications of each feature.

tracing-tracy/Cargo.toml

@@ -50,7 +50,7 @@ manual-lifetime = ["client/manual-lifetime"]
 delayed-init = ["client/delayed-init"]
 flush-on-exit = ["client/flush-on-exit"]
 demangle = ["client/demangle"]
-no-verify = ["client/no-verify"]
+verify = ["client/verify"]
 
 [package.metadata.docs.rs]
 rustdoc-args = ["--cfg", "tracing_tracy_docs"]

tracy-client-sys/Cargo.toml

@@ -45,7 +45,7 @@ delayed-init = []
 callstack-inlines = []
 flush-on-exit = []
 demangle = []
-no-verify = []
+verify = []
 
 [package.metadata.docs.rs]
 all-features = true

tracy-client-sys/build.rs

@@ -18,9 +18,6 @@ fn set_feature_defines(mut c: cc::Build) -> cc::Build {
     if std::env::var_os("CARGO_FEATURE_ENABLE").is_some() {
         c.define("TRACY_ENABLE", None);
     }
-    if std::env::var_os("CARGO_FEATURE_NO_VERIFY").is_some() {
-        c.define("TRACY_NO_VERIFY", None);
-    }
     if std::env::var_os("CARGO_FEATURE_TIMER_FALLBACK").is_some() {
         c.define("TRACY_TIMER_FALLBACK", None);
     }
@@ -68,6 +65,9 @@ fn set_feature_defines(mut c: cc::Build) -> cc::Build {
     if std::env::var_os("CARGO_FEATURE_CALLSTACK_INLINES").is_none() {
         c.define("TRACY_NO_CALLSTACK_INLINES", None);
     }
+    if std::env::var_os("CARGO_FEATURE_VERIFY").is_none() {
+        c.define("TRACY_NO_VERIFY", None);
+    }
     c
 }
 

tracy-client/Cargo.toml

@@ -64,7 +64,7 @@ manual-lifetime = ["sys/manual-lifetime"]
 delayed-init = ["sys/delayed-init"]
 flush-on-exit = ["sys/flush-on-exit"]
 demangle = ["sys/demangle", "dep:rustc-demangle"]
-no-verify = ["sys/no-verify"]
+verify = ["sys/verify"]
 
 [package.metadata.docs.rs]
 rustdoc-args = ["--cfg", "tracy_client_docs"]